15972195265 has 8 divisors (see below), whose sum is σ = 20640990888. Its totient is φ = 11794851840.

The previous prime is 15972195257. The next prime is 15972195307. The reversal of 15972195265 is 56259127951.

It can be written as a sum of positive squares in 4 ways, for example, as 540841536 + 15431353729 = 23256^2 + 124223^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15972195265 - 2³ = 15972195257 is a prime.

It is a super-2 number, since 2×15972195265² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122862976 + ... + 122863105.

It is an arithmetic number, because the mean of its divisors is an integer number (2580123861).

Almost surely, 2^15972195265 is an apocalyptic number.

It is an amenable number.

15972195265 is a deficient number, since it is larger than the sum of its proper divisors (4668795623).

15972195265 is a wasteful number, since it uses less digits than its factorization.

15972195265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245726099.

The product of its digits is 1701000, while the sum is 52.

The spelling of 15972195265 in words is "fifteen billion, nine hundred seventy-two million, one hundred ninety-five thousand, two hundred sixty-five".