7978536951 has 32 divisors (see below), whose sum is σ = 14043207168. Its totient is φ = 3900887040.

The previous prime is 7978536919. The next prime is 7978536959. The reversal of 7978536951 is 1596358797.

It is not a de Polignac number, because 7978536951 - 2⁵ = 7978536919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7978536959) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1011930 + ... + 1019783.

It is an arithmetic number, because the mean of its divisors is an integer number (438850224).

Almost surely, 2^7978536951 is an apocalyptic number.

7978536951 is a deficient number, since it is larger than the sum of its proper divisors (6064670217).

7978536951 is a wasteful number, since it uses less digits than its factorization.

7978536951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031751.

The product of its digits is 14288400, while the sum is 60.

The square root of 7978536951 is about 89322.6564260155. The cubic root of 7978536951 is about 1998.2098106725.

The spelling of 7978536951 in words is "seven billion, nine hundred seventy-eight million, five hundred thirty-six thousand, nine hundred fifty-one".