77967795191 has 32 divisors (see below), whose sum is σ = 92623895616. Its totient is φ = 64696320000.

The previous prime is 77967795167. The next prime is 77967795203. The reversal of 77967795191 is 19159776977.

It is not a de Polignac number, because 77967795191 - 2²² = 77963600887 is a prime.

It is a super-4 number, since 4×77967795191⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77967795491) 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, 24980111 + ... + 24983231.

It is an arithmetic number, because the mean of its divisors is an integer number (2894496738).

Almost surely, 2^77967795191 is an apocalyptic number.

77967795191 is a deficient number, since it is larger than the sum of its proper divisors (14656100425).

77967795191 is a wasteful number, since it uses less digits than its factorization.

77967795191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5043.

The product of its digits is 52509870, while the sum is 68.

The spelling of 77967795191 in words is "seventy-seven billion, nine hundred sixty-seven million, seven hundred ninety-five thousand, one hundred ninety-one".