40634218145 has 4 divisors (see below), whose sum is σ = 48761061780. Its totient is φ = 32507374512.

The previous prime is 40634218139. The next prime is 40634218169. The reversal of 40634218145 is 54181243604.

It is a happy number.

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 8621493904 + 32012724241 = 92852^2 + 178921^2 .

It is a cyclic number.

It is not a de Polignac number, because 40634218145 - 2¹⁴ = 40634201761 is a prime.

It is a super-2 number, since 2×40634218145² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40634218099 and 40634218108.

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, 4063421810 + ... + 4063421819.

It is an arithmetic number, because the mean of its divisors is an integer number (12190265445).

Almost surely, 2^40634218145 is an apocalyptic number.

It is an amenable number.

40634218145 is a deficient number, since it is larger than the sum of its proper divisors (8126843635).

40634218145 is an equidigital number, since it uses as much as digits as its factorization.

40634218145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8126843634.

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 40634218145 in words is "forty billion, six hundred thirty-four million, two hundred eighteen thousand, one hundred forty-five".