381677477940 has 72 divisors (see below), whose sum is σ = 1263005479008. Its totient is φ = 92527872960.

The previous prime is 381677477911. The next prime is 381677477971. The reversal of 381677477940 is 49774776183.

381677477940 is a `hidden beast` number, since 3 + 8 + 1 + 6 + 77 + 477 + 94 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96381222 + ... + 96385181.

It is an arithmetic number, because the mean of its divisors is an integer number (17541742764).

Almost surely, 2^381677477940 is an apocalyptic number.

381677477940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

381677477940 is an abundant number, since it is smaller than the sum of its proper divisors (881328001068).

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

381677477940 is a wasteful number, since it uses less digits than its factorization.

381677477940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192766429 (or 192766424 counting only the distinct ones).

The product of its (nonzero) digits is 49787136, while the sum is 63.

The spelling of 381677477940 in words is "three hundred eighty-one billion, six hundred seventy-seven million, four hundred seventy-seven thousand, nine hundred forty".