384177781020 has 48 divisors (see below), whose sum is σ = 1173488496768. Its totient is φ = 93134007360.

The previous prime is 384177780979. The next prime is 384177781049. The reversal of 384177781020 is 20187771483.

It is a congruent number.

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, 291043114 + ... + 291044433.

It is an arithmetic number, because the mean of its divisors is an integer number (24447677016).

Almost surely, 2^384177781020 is an apocalyptic number.

384177781020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

384177781020 is an abundant number, since it is smaller than the sum of its proper divisors (789310715748).

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

384177781020 is a wasteful number, since it uses less digits than its factorization.

384177781020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582087570 (or 582087568 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 48.

The spelling of 384177781020 in words is "three hundred eighty-four billion, one hundred seventy-seven million, seven hundred eighty-one thousand, twenty".