77404427345 has 16 divisors (see below), whose sum is σ = 106173159168. Its totient is φ = 53068063680.

The previous prime is 77404427299. The next prime is 77404427357. The reversal of 77404427345 is 54372440477.

It is not a de Polignac number, because 77404427345 - 2³⁶ = 8684950609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77404427345.

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, 13772 + ... + 393698.

It is an arithmetic number, because the mean of its divisors is an integer number (6635822448).

Almost surely, 2^77404427345 is an apocalyptic number.

It is an amenable number.

77404427345 is a deficient number, since it is larger than the sum of its proper divisors (28768731823).

77404427345 is a wasteful number, since it uses less digits than its factorization.

77404427345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385760.

The product of its (nonzero) digits is 2634240, while the sum is 47.

The spelling of 77404427345 in words is "seventy-seven billion, four hundred four million, four hundred twenty-seven thousand, three hundred forty-five".