77331054858 has 16 divisors (see below), whose sum is σ = 154896809760. Its totient is φ = 25737901616.

The previous prime is 77331054851. The next prime is 77331054859. The reversal of 77331054858 is 85845013377.

It is a self number, because there is not a number n which added to its sum of digits gives 77331054858.

It is not an unprimeable number, because it can be changed into a prime (77331054851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9774885 + ... + 9782792.

It is an arithmetic number, because the mean of its divisors is an integer number (9681050610).

Almost surely, 2^77331054858 is an apocalyptic number.

77331054858 is an abundant number, since it is smaller than the sum of its proper divisors (77565754902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77331054858 is a wasteful number, since it uses less digits than its factorization.

77331054858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19558341.

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 77331054858 in words is "seventy-seven billion, three hundred thirty-one million, fifty-four thousand, eight hundred fifty-eight".