381650572836 has 72 divisors (see below), whose sum is σ = 1049648492984. Its totient is φ = 116220303360.

The previous prime is 381650572817. The next prime is 381650572861. The reversal of 381650572836 is 638275056183.

381650572836 is a `hidden beast` number, since 3 + 8 + 1 + 65 + 0 + 572 + 8 + 3 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 60678468900 + 320972103936 = 246330^2 + 566544^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4158175 + ... + 4248966.

Almost surely, 2^381650572836 is an apocalyptic number.

381650572836 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

381650572836 is an abundant number, since it is smaller than the sum of its proper divisors (667997920148).

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

381650572836 is a wasteful number, since it uses less digits than its factorization.

381650572836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8407261 (or 8407256 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 381650572836 in words is "three hundred eighty-one billion, six hundred fifty million, five hundred seventy-two thousand, eight hundred thirty-six".