77023323155 has 32 divisors (see below), whose sum is σ = 98622002304. Its totient is φ = 57546418176.

The previous prime is 77023323107. The next prime is 77023323161. The reversal of 77023323155 is 55132332077.

It is a cyclic number.

It is not a de Polignac number, because 77023323155 - 2⁸ = 77023322899 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 10979429 + ... + 10986441.

It is an arithmetic number, because the mean of its divisors is an integer number (3081937572).

Almost surely, 2^77023323155 is an apocalyptic number.

77023323155 is a deficient number, since it is larger than the sum of its proper divisors (21598679149).

77023323155 is a wasteful number, since it uses less digits than its factorization.

77023323155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8015.

The product of its (nonzero) digits is 132300, while the sum is 38.

The spelling of 77023323155 in words is "seventy-seven billion, twenty-three million, three hundred twenty-three thousand, one hundred fifty-five".