15952396985 has 16 divisors (see below), whose sum is σ = 21880200576. Its totient is φ = 10937472768.

The previous prime is 15952396969. The next prime is 15952397003. The reversal of 15952396985 is 58969325951.

It is a cyclic number.

It is not a de Polignac number, because 15952396985 - 2⁴ = 15952396969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 336257 + ... + 380753.

It is an arithmetic number, because the mean of its divisors is an integer number (1367512536).

Almost surely, 2^15952396985 is an apocalyptic number.

It is an amenable number.

15952396985 is a deficient number, since it is larger than the sum of its proper divisors (5927803591).

15952396985 is a wasteful number, since it uses less digits than its factorization.

15952396985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54752.

The product of its digits is 26244000, while the sum is 62.

The spelling of 15952396985 in words is "fifteen billion, nine hundred fifty-two million, three hundred ninety-six thousand, nine hundred eighty-five".