16031256402 has 48 divisors (see below), whose sum is σ = 37908680832. Its totient is φ = 4505266080.

The previous prime is 16031256401. The next prime is 16031256457. The reversal of 16031256402 is 20465213061.

It is a self number, because there is not a number n which added to its sum of digits gives 16031256402.

It is not an unprimeable number, because it can be changed into a prime (16031256401) 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 in 23 ways as a sum of consecutive naturals, for example, 429018 + ... + 464885.

It is an arithmetic number, because the mean of its divisors is an integer number (789764184).

Almost surely, 2^16031256402 is an apocalyptic number.

16031256402 is an abundant number, since it is smaller than the sum of its proper divisors (21877424430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16031256402 is a wasteful number, since it uses less digits than its factorization.

16031256402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893983 (or 893976 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 16031256402 its reverse (20465213061), we get a palindrome (36496469463).

The spelling of 16031256402 in words is "sixteen billion, thirty-one million, two hundred fifty-six thousand, four hundred two".