17995120965 has 48 divisors (see below), whose sum is σ = 31712955456. Its totient is φ = 9437472000.

The previous prime is 17995120937. The next prime is 17995120973. The reversal of 17995120965 is 56902159971.

It is not a de Polignac number, because 17995120965 - 2⁵ = 17995120933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1807050 + ... + 1816980.

It is an arithmetic number, because the mean of its divisors is an integer number (660686572).

Almost surely, 2^17995120965 is an apocalyptic number.

17995120965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

17995120965 is a deficient number, since it is larger than the sum of its proper divisors (13717834491).

17995120965 is a wasteful number, since it uses less digits than its factorization.

17995120965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10610 (or 10607 counting only the distinct ones).

The product of its (nonzero) digits is 1530900, while the sum is 54.

The spelling of 17995120965 in words is "seventeen billion, nine hundred ninety-five million, one hundred twenty thousand, nine hundred sixty-five".