7878954672 has 80 divisors (see below), whose sum is σ = 23141514880. Its totient is φ = 2565235008.

The previous prime is 7878954659. The next prime is 7878954679. The reversal of 7878954672 is 2764598787.

7878954672 is a `hidden beast` number, since 7 + 8 + 7 + 89 + 546 + 7 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (7878954679) 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 15 ways as a sum of consecutive naturals, for example, 193498 + ... + 230649.

It is an arithmetic number, because the mean of its divisors is an integer number (289268936).

Almost surely, 2^7878954672 is an apocalyptic number.

7878954672 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7878954672 is an abundant number, since it is smaller than the sum of its proper divisors (15262560208).

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

7878954672 is a wasteful number, since it uses less digits than its factorization.

7878954672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424207 (or 424195 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 63.

The square root of 7878954672 is about 88763.4760022387. The cubic root of 7878954672 is about 1989.8615824197.

The spelling of 7878954672 in words is "seven billion, eight hundred seventy-eight million, nine hundred fifty-four thousand, six hundred seventy-two".