77929934445 has 36 divisors (see below), whose sum is σ = 148474783548. Its totient is φ = 37784208000.

The previous prime is 77929934399. The next prime is 77929934491. The reversal of 77929934445 is 54443992977.

77929934445 is a `hidden beast` number, since 7 + 79 + 2 + 99 + 34 + 445 = 666.

It is an interprime number because it is at equal distance from previous prime (77929934399) and next prime (77929934491).

It can be written as a sum of positive squares in 2 ways, for example, as 41068238409 + 36861696036 = 202653^2 + 191994^2 .

It is not a de Polignac number, because 77929934445 - 2²³ = 77921545837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7150656 + ... + 7161545.

It is an arithmetic number, because the mean of its divisors is an integer number (4124299543).

Almost surely, 2^77929934445 is an apocalyptic number.

It is an amenable number.

77929934445 is a deficient number, since it is larger than the sum of its proper divisors (70544849103).

77929934445 is a wasteful number, since it uses less digits than its factorization.

77929934445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14312234 (or 14312220 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 63.

The spelling of 77929934445 in words is "seventy-seven billion, nine hundred twenty-nine million, nine hundred thirty-four thousand, four hundred forty-five".