7720979456 has 22 divisors (see below), whose sum is σ = 15434420940. Its totient is φ = 3860489216.

The previous prime is 7720979449. The next prime is 7720979489. The reversal of 7720979456 is 6549790277.

It is a super-2 number, since 2×7720979456² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3768986 + ... + 3771033.

Almost surely, 2^7720979456 is an apocalyptic number.

It is an amenable number.

7720979456 is a deficient number, since it is larger than the sum of its proper divisors (7713441484).

7720979456 is an equidigital number, since it uses as much as digits as its factorization.

7720979456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7540039 (or 7540021 counting only the distinct ones).

The product of its (nonzero) digits is 6667920, while the sum is 56.

The square root of 7720979456 is about 87869.1041037747. The cubic root of 7720979456 is about 1976.4726040974.

The spelling of 7720979456 in words is "seven billion, seven hundred twenty million, nine hundred seventy-nine thousand, four hundred fifty-six".