7972112916 has 18 divisors (see below), whose sum is σ = 20151729962. Its totient is φ = 2657370960.

The previous prime is 7972112909. The next prime is 7972112917. The reversal of 7972112916 is 6192112797.

It can be written as a sum of positive squares in only one way, i.e., 5634003600 + 2338109316 = 75060^2 + 48354^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7972112917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110723755 + ... + 110723826.

Almost surely, 2^7972112916 is an apocalyptic number.

It is an amenable number.

7972112916 is an abundant number, since it is smaller than the sum of its proper divisors (12179617046).

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

7972112916 is a wasteful number, since it uses less digits than its factorization.

7972112916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221447591 (or 221447586 counting only the distinct ones).

The product of its digits is 95256, while the sum is 45.

The square root of 7972112916 is about 89286.6894671317. The cubic root of 7972112916 is about 1997.6733707811.

The spelling of 7972112916 in words is "seven billion, nine hundred seventy-two million, one hundred twelve thousand, nine hundred sixteen".