77051763545 has 16 divisors (see below), whose sum is σ = 92747345808. Its totient is φ = 61451550720.

The previous prime is 77051763497. The next prime is 77051763553. The reversal of 77051763545 is 54536715077.

It can be written as a sum of positive squares in 8 ways, for example, as 2227084864 + 74824678681 = 47192^2 + 273541^2 .

It is not a de Polignac number, because 77051763545 - 2⁸ = 77051763289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77051763493 and 77051763502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2166305 + ... + 2201585.

It is an arithmetic number, because the mean of its divisors is an integer number (5796709113).

Almost surely, 2^77051763545 is an apocalyptic number.

It is an amenable number.

77051763545 is a deficient number, since it is larger than the sum of its proper divisors (15695582263).

77051763545 is a wasteful number, since it uses less digits than its factorization.

77051763545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36620.

The product of its (nonzero) digits is 3087000, while the sum is 50.

The spelling of 77051763545 in words is "seventy-seven billion, fifty-one million, seven hundred sixty-three thousand, five hundred forty-five".