77155155613072 has 20 divisors (see below), whose sum is σ = 149508844790256. Its totient is φ = 38572227925280.

The previous prime is 77155155613057. The next prime is 77155155613087. The reversal of 77155155613072 is 27031655155177.

It is an interprime number because it is at equal distance from previous prime (77155155613057) and next prime (77155155613087).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334248598 + ... + 334479349.

Almost surely, 2^{77155155613072} is an apocalyptic number.

It is an amenable number.

77155155613072 is a deficient number, since it is larger than the sum of its proper divisors (72353689177184).

77155155613072 is a wasteful number, since it uses less digits than its factorization.

77155155613072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668735166 (or 668735160 counting only the distinct ones).

The product of its (nonzero) digits is 7717500, while the sum is 55.

The spelling of 77155155613072 in words is "seventy-seven trillion, one hundred fifty-five billion, one hundred fifty-five million, six hundred thirteen thousand, seventy-two".