77005123354655 has 32 divisors (see below), whose sum is σ = 95901081312960. Its totient is φ = 59288106608640.

The previous prime is 77005123354633. The next prime is 77005123354693. The reversal of 77005123354655 is 55645332150077.

It is not a de Polignac number, because 77005123354655 - 2¹⁸ = 77005123092511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77005123354597 and 77005123354606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68062940 + ... + 69185070.

It is an arithmetic number, because the mean of its divisors is an integer number (2996908791030).

Almost surely, 2^{77005123354655} is an apocalyptic number.

77005123354655 is a deficient number, since it is larger than the sum of its proper divisors (18895957958305).

77005123354655 is a wasteful number, since it uses less digits than its factorization.

77005123354655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123691.

The product of its (nonzero) digits is 13230000, while the sum is 53.

The spelling of 77005123354655 in words is "seventy-seven trillion, five billion, one hundred twenty-three million, three hundred fifty-four thousand, six hundred fifty-five".