3556401036431 has 2 divisors, whose sum is σ = 3556401036432. Its totient is φ = 3556401036430.

The previous prime is 3556401036427. The next prime is 3556401036443. The reversal of 3556401036431 is 1346301046553.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3556401036431 - 2² = 3556401036427 is a prime.

It is a super-2 number, since 2×3556401036431² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3556401036401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1778200518215 + 1778200518216.

It is an arithmetic number, because the mean of its divisors is an integer number (1778200518216).

Almost surely, 2^{3556401036431} is an apocalyptic number.

3556401036431 is a deficient number, since it is larger than the sum of its proper divisors (1).

3556401036431 is an equidigital number, since it uses as much as digits as its factorization.

3556401036431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 3556401036431 in words is "three trillion, five hundred fifty-six billion, four hundred one million, thirty-six thousand, four hundred thirty-one".