1023366656245 has 4 divisors (see below), whose sum is σ = 1228039987500. Its totient is φ = 818693324992.

The previous prime is 1023366656197. The next prime is 1023366656269. The reversal of 1023366656245 is 5426566633201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 416397893521 + 606968762724 = 645289^2 + 779082^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023366656245 - 2²³ = 1023358267637 is a prime.

It is a super-2 number, since 2×1023366656245² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102336665620 + ... + 102336665629.

It is an arithmetic number, because the mean of its divisors is an integer number (307009996875).

Almost surely, 2^{1023366656245} is an apocalyptic number.

It is an amenable number.

1023366656245 is a deficient number, since it is larger than the sum of its proper divisors (204673331255).

1023366656245 is an equidigital number, since it uses as much as digits as its factorization.

1023366656245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204673331254.

The product of its (nonzero) digits is 4665600, while the sum is 49.

The spelling of 1023366656245 in words is "one trillion, twenty-three billion, three hundred sixty-six million, six hundred fifty-six thousand, two hundred forty-five".