7872255867 has 12 divisors (see below), whose sum is σ = 12210029736. Its totient is φ = 4498431840.

The previous prime is 7872255863. The next prime is 7872255913. The reversal of 7872255867 is 7685522787.

It is not a de Polignac number, because 7872255867 - 2² = 7872255863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7872255863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26776234 + ... + 26776527.

It is an arithmetic number, because the mean of its divisors is an integer number (1017502478).

Almost surely, 2^7872255867 is an apocalyptic number.

7872255867 is a deficient number, since it is larger than the sum of its proper divisors (4337773869).

7872255867 is a wasteful number, since it uses less digits than its factorization.

7872255867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53552778 (or 53552771 counting only the distinct ones).

The product of its digits is 13171200, while the sum is 57.

The square root of 7872255867 is about 88725.7339614613. The cubic root of 7872255867 is about 1989.2974858375.

The spelling of 7872255867 in words is "seven billion, eight hundred seventy-two million, two hundred fifty-five thousand, eight hundred sixty-seven".