16510117625 has 16 divisors (see below), whose sum is σ = 20623479552. Its totient is φ = 13196009200.

The previous prime is 16510117607. The next prime is 16510117661. The reversal of 16510117625 is 52671101561.

It is not a de Polignac number, because 16510117625 - 2²⁸ = 16241682169 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78002 + ... + 197748.

It is an arithmetic number, because the mean of its divisors is an integer number (1288967472).

Almost surely, 2^16510117625 is an apocalyptic number.

It is an amenable number.

16510117625 is a deficient number, since it is larger than the sum of its proper divisors (4113361927).

16510117625 is a wasteful number, since it uses less digits than its factorization.

16510117625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120865 (or 120855 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 35.

The spelling of 16510117625 in words is "sixteen billion, five hundred ten million, one hundred seventeen thousand, six hundred twenty-five".