7798118977 has 16 divisors (see below), whose sum is σ = 9010267200. Its totient is φ = 6670103040.

The previous prime is 7798118959. The next prime is 7798118983.

7798118977 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 7798118977 - 2⁷ = 7798118849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7798118957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1054549 + ... + 1061917.

It is an arithmetic number, because the mean of its divisors is an integer number (563141700).

Almost surely, 2^7798118977 is an apocalyptic number.

It is an amenable number.

7798118977 is a deficient number, since it is larger than the sum of its proper divisors (1212148223).

7798118977 is a wasteful number, since it uses less digits than its factorization.

7798118977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13056.

The product of its digits is 12446784, while the sum is 64.

The square root of 7798118977 is about 88306.9588254516. The cubic root of 7798118977 is about 1983.0330497497.

The spelling of 7798118977 in words is "seven billion, seven hundred ninety-eight million, one hundred eighteen thousand, nine hundred seventy-seven".