381919155720 has 32 divisors (see below), whose sum is σ = 1145757467520. Its totient is φ = 101845108160.

The previous prime is 381919155703. The next prime is 381919155721. The reversal of 381919155720 is 27551919183.

It is not an unprimeable number, because it can be changed into a prime (381919155721) 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, 1591329696 + ... + 1591329935.

It is an arithmetic number, because the mean of its divisors is an integer number (35804920860).

Almost surely, 2^381919155720 is an apocalyptic number.

381919155720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

381919155720 is an abundant number, since it is smaller than the sum of its proper divisors (763838311800).

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

381919155720 is a wasteful number, since it uses less digits than its factorization.

381919155720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3182659645 (or 3182659641 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 51.

The spelling of 381919155720 in words is "three hundred eighty-one billion, nine hundred nineteen million, one hundred fifty-five thousand, seven hundred twenty".