8168072972 has 12 divisors (see below), whose sum is σ = 14642765256. Its totient is φ = 3984425760.

The previous prime is 8168072971. The next prime is 8168072993. The reversal of 8168072972 is 2792708618.

It is a self number, because there is not a number n which added to its sum of digits gives 8168072972.

It is not an unprimeable number, because it can be changed into a prime (8168072971) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 24902498 + ... + 24902825.

It is an arithmetic number, because the mean of its divisors is an integer number (1220230438).

Almost surely, 2^8168072972 is an apocalyptic number.

8168072972 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

8168072972 is a deficient number, since it is larger than the sum of its proper divisors (6474692284).

8168072972 is a wasteful number, since it uses less digits than its factorization.

8168072972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49805368 (or 49805366 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 8168072972 is about 90377.3919296192. The cubic root of 8168072972 is about 2013.9091248799.

The spelling of 8168072972 in words is "eight billion, one hundred sixty-eight million, seventy-two thousand, nine hundred seventy-two".