77685077151 has 18 divisors (see below), whose sum is σ = 123340220640. Its totient is φ = 47081864280.

The previous prime is 77685077083. The next prime is 77685077189. The reversal of 77685077151 is 15177058677.

77685077151 is a `hidden beast` number, since 7 + 7 + 68 + 507 + 71 + 5 + 1 = 666.

It is not a de Polignac number, because 77685077151 - 2¹⁰ = 77685076127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77685077651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 35666991 + ... + 35669168.

It is an arithmetic number, because the mean of its divisors is an integer number (6852234480).

Almost surely, 2^77685077151 is an apocalyptic number.

77685077151 is a deficient number, since it is larger than the sum of its proper divisors (45655143489).

77685077151 is a wasteful number, since it uses less digits than its factorization.

77685077151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71336187 (or 71336173 counting only the distinct ones).

The product of its (nonzero) digits is 2881200, while the sum is 54.

The spelling of 77685077151 in words is "seventy-seven billion, six hundred eighty-five million, seventy-seven thousand, one hundred fifty-one".