77055577230 has 64 divisors (see below), whose sum is σ = 191501444160. Its totient is φ = 19819785216.

The previous prime is 77055577229. The next prime is 77055577297. The reversal of 77055577230 is 3277555077.

It is a self number, because there is not a number n which added to its sum of digits gives 77055577230.

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, 837594 + ... + 925026.

It is an arithmetic number, because the mean of its divisors is an integer number (2992210065).

Almost surely, 2^77055577230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77055577230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95750722080).

77055577230 is an abundant number, since it is smaller than the sum of its proper divisors (114445866930).

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

77055577230 is a wasteful number, since it uses less digits than its factorization.

77055577230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88485.

The product of its (nonzero) digits is 1800750, while the sum is 48.

The spelling of 77055577230 in words is "seventy-seven billion, fifty-five million, five hundred seventy-seven thousand, two hundred thirty".