402612425631 has 48 divisors (see below), whose sum is σ = 647392112640. Its totient is φ = 239434159680.

The previous prime is 402612425629. The next prime is 402612425651. The reversal of 402612425631 is 136524216204.

402612425631 is a `hidden beast` number, since 4 + 0 + 2 + 6 + 12 + 4 + 2 + 5 + 631 = 666.

It is not a de Polignac number, because 402612425631 - 2¹ = 402612425629 is a prime.

It is a super-2 number, since 2×402612425631² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402612425651) 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 in 47 ways as a sum of consecutive naturals, for example, 2530620 + ... + 2685006.

It is an arithmetic number, because the mean of its divisors is an integer number (13487335680).

Almost surely, 2^402612425631 is an apocalyptic number.

402612425631 is a deficient number, since it is larger than the sum of its proper divisors (244779687009).

402612425631 is a wasteful number, since it uses less digits than its factorization.

402612425631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155156 (or 155153 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 402612425631 in words is "four hundred two billion, six hundred twelve million, four hundred twenty-five thousand, six hundred thirty-one".