77105531125 has 32 divisors (see below), whose sum is σ = 110132275968. Its totient is φ = 52796520000.

The previous prime is 77105531123. The next prime is 77105531159. The reversal of 77105531125 is 52113550177.

It is not a de Polignac number, because 77105531125 - 2¹ = 77105531123 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77105531123) 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, 550522 + ... + 676228.

It is an arithmetic number, because the mean of its divisors is an integer number (3441633624).

Almost surely, 2^77105531125 is an apocalyptic number.

It is an amenable number.

77105531125 is a deficient number, since it is larger than the sum of its proper divisors (33026744843).

77105531125 is a wasteful number, since it uses less digits than its factorization.

77105531125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126430 (or 126420 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 37.

The spelling of 77105531125 in words is "seventy-seven billion, one hundred five million, five hundred thirty-one thousand, one hundred twenty-five".