77967796292 has 24 divisors (see below), whose sum is σ = 138342245496. Its totient is φ = 38441668608.

The previous prime is 77967796261. The next prime is 77967796327. The reversal of 77967796292 is 29269776977.

It can be written as a sum of positive squares in 4 ways, for example, as 13322699776 + 64645096516 = 115424^2 + 254254^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1478768 + ... + 1530584.

It is an arithmetic number, because the mean of its divisors is an integer number (5764260229).

Almost surely, 2^77967796292 is an apocalyptic number.

It is an amenable number.

77967796292 is a deficient number, since it is larger than the sum of its proper divisors (60374449204).

77967796292 is a wasteful number, since it uses less digits than its factorization.

77967796292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57047 (or 57045 counting only the distinct ones).

The product of its digits is 252047376, while the sum is 71.

The spelling of 77967796292 in words is "seventy-seven billion, nine hundred sixty-seven million, seven hundred ninety-six thousand, two hundred ninety-two".