16625978031 has 16 divisors (see below), whose sum is σ = 23876729856. Its totient is φ = 10229858016.

The previous prime is 16625978021. The next prime is 16625978041. The reversal of 16625978031 is 13087952661.

It is an interprime number because it is at equal distance from previous prime (16625978021) and next prime (16625978041).

It is not a de Polignac number, because 16625978031 - 2⁵ = 16625977999 is a prime.

It is a super-2 number, since 2×16625978031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16625978021) 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 15 ways as a sum of consecutive naturals, for example, 272746 + ... + 328088.

It is an arithmetic number, because the mean of its divisors is an integer number (1492295616).

Almost surely, 2^16625978031 is an apocalyptic number.

16625978031 is a deficient number, since it is larger than the sum of its proper divisors (7250751825).

16625978031 is a wasteful number, since it uses less digits than its factorization.

16625978031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63062.

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 16625978031 in words is "sixteen billion, six hundred twenty-five million, nine hundred seventy-eight thousand, thirty-one".