381137977240 has 16 divisors (see below), whose sum is σ = 857560448880. Its totient is φ = 152455190880.

The previous prime is 381137977219. The next prime is 381137977249. The reversal of 381137977240 is 42779731183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381137977249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4764224676 + ... + 4764224755.

It is an arithmetic number, because the mean of its divisors is an integer number (53597528055).

Almost surely, 2^381137977240 is an apocalyptic number.

It is an amenable number.

381137977240 is an abundant number, since it is smaller than the sum of its proper divisors (476422471640).

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

381137977240 is a wasteful number, since it uses less digits than its factorization.

381137977240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9528449442 (or 9528449438 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 52.

The spelling of 381137977240 in words is "three hundred eighty-one billion, one hundred thirty-seven million, nine hundred seventy-seven thousand, two hundred forty".