72957837970 has 8 divisors (see below), whose sum is σ = 131324108364. Its totient is φ = 29183135184.

The previous prime is 72957837943. The next prime is 72957837977. The reversal of 72957837970 is 7973875927.

It can be written as a sum of positive squares in 2 ways, for example, as 69267396969 + 3690441001 = 263187^2 + 60749^2 .

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

It is a super-2 number, since 2×72957837970² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72957837977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3647891889 + ... + 3647891908.

Almost surely, 2^72957837970 is an apocalyptic number.

72957837970 is a deficient number, since it is larger than the sum of its proper divisors (58366270394).

72957837970 is a wasteful number, since it uses less digits than its factorization.

72957837970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7295783804.

The product of its (nonzero) digits is 46675440, while the sum is 64.

The spelling of 72957837970 in words is "seventy-two billion, nine hundred fifty-seven million, eight hundred thirty-seven thousand, nine hundred seventy".