77197508125 has 20 divisors (see below), whose sum is σ = 96503608960. Its totient is φ = 61733934000.

The previous prime is 77197508111. The next prime is 77197508149. The reversal of 77197508125 is 52180579177.

It is not a de Polignac number, because 77197508125 - 2⁵ = 77197508093 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1676662 + ... + 1722088.

It is an arithmetic number, because the mean of its divisors is an integer number (4825180448).

Almost surely, 2^77197508125 is an apocalyptic number.

It is an amenable number.

77197508125 is a deficient number, since it is larger than the sum of its proper divisors (19306100835).

77197508125 is an equidigital number, since it uses as much as digits as its factorization.

77197508125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48166 (or 48151 counting only the distinct ones).

The product of its (nonzero) digits is 1234800, while the sum is 52.

The spelling of 77197508125 in words is "seventy-seven billion, one hundred ninety-seven million, five hundred eight thousand, one hundred twenty-five".