436793802421 has 2 divisors, whose sum is σ = 436793802422. Its totient is φ = 436793802420.

The previous prime is 436793802359. The next prime is 436793802527. The reversal of 436793802421 is 124208397634.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 421395722500 + 15398079921 = 649150^2 + 124089^2 .

It is a cyclic number.

It is not a de Polignac number, because 436793802421 - 2¹⁵ = 436793769653 is a prime.

It is a super-2 number, since 2×436793802421² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (436793805421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218396901210 + 218396901211.

It is an arithmetic number, because the mean of its divisors is an integer number (218396901211).

Almost surely, 2^436793802421 is an apocalyptic number.

It is an amenable number.

436793802421 is a deficient number, since it is larger than the sum of its proper divisors (1).

436793802421 is an equidigital number, since it uses as much as digits as its factorization.

436793802421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 436793802421 in words is "four hundred thirty-six billion, seven hundred ninety-three million, eight hundred two thousand, four hundred twenty-one".