15972195265000 has 80 divisors (see below), whose sum is σ = 40301534708820. Its totient is φ = 5897425920000.

The previous prime is 15972195264967. The next prime is 15972195265009. The reversal of 15972195265000 is 56259127951.

It can be written as a sum of positive squares in 10 ways, for example, as 2661328924164 + 13310866340836 = 1631358^2 + 3648406^2 .

It is a super-2 number, since 2×15972195265000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (15972195265009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 122798041 + ... + 122928040.

Almost surely, 2^{15972195265000} is an apocalyptic number.

15972195265000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15972195265000 is an abundant number, since it is smaller than the sum of its proper divisors (24329339443820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15972195265000 is a wasteful number, since it uses less digits than its factorization.

15972195265000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245726120 (or 245726101 counting only the distinct ones).

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

The spelling of 15972195265000 in words is "fifteen trillion, nine hundred seventy-two billion, one hundred ninety-five million, two hundred sixty-five thousand".