380389777880 has 32 divisors (see below), whose sum is σ = 978145143840. Its totient is φ = 130419352320.

The previous prime is 380389777877. The next prime is 380389777891. The reversal of 380389777880 is 88777983083.

It is a self number, because there is not a number n which added to its sum of digits gives 380389777880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679267181 + ... + 679267740.

It is an arithmetic number, because the mean of its divisors is an integer number (30567035745).

Almost surely, 2^380389777880 is an apocalyptic number.

It is an amenable number.

380389777880 is an abundant number, since it is smaller than the sum of its proper divisors (597755365960).

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

380389777880 is a wasteful number, since it uses less digits than its factorization.

380389777880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358534939 (or 1358534935 counting only the distinct ones).

The product of its (nonzero) digits is 113799168, while the sum is 68.

The spelling of 380389777880 in words is "three hundred eighty billion, three hundred eighty-nine million, seven hundred seventy-seven thousand, eight hundred eighty".