7792131311978 has 16 divisors (see below), whose sum is σ = 12662662037760. Its totient is φ = 3574833156336.

The previous prime is 7792131311971. The next prime is 7792131312019. The reversal of 7792131311978 is 8791131312977.

It is not an unprimeable number, because it can be changed into a prime (7792131311971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 897293138 + ... + 897301821.

It is an arithmetic number, because the mean of its divisors is an integer number (791416377360).

Almost surely, 2^{7792131311978} is an apocalyptic number.

7792131311978 is a deficient number, since it is larger than the sum of its proper divisors (4870530725782).

7792131311978 is a wasteful number, since it uses less digits than its factorization.

7792131311978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794595141.

The product of its digits is 4000752, while the sum is 59.

Subtracting 7792131311978 from its reverse (8791131312977), we obtain a palindrome (999000000999).

The spelling of 7792131311978 in words is "seven trillion, seven hundred ninety-two billion, one hundred thirty-one million, three hundred eleven thousand, nine hundred seventy-eight".