77105531124 has 24 divisors (see below), whose sum is σ = 199903229120. Its totient is φ = 25701843672.

The previous prime is 77105531123. The next prime is 77105531159. The reversal of 77105531124 is 42113550177.

77105531124 is a `hidden beast` number, since 7 + 7 + 105 + 531 + 12 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356969944 + ... + 356970159.

Almost surely, 2^77105531124 is an apocalyptic number.

It is an amenable number.

77105531124 is an abundant number, since it is smaller than the sum of its proper divisors (122797697996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77105531124 is a wasteful number, since it uses less digits than its factorization.

77105531124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713940116 (or 713940108 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The spelling of 77105531124 in words is "seventy-seven billion, one hundred five million, five hundred thirty-one thousand, one hundred twenty-four".