381651799356 has 48 divisors (see below), whose sum is σ = 989746643200. Its totient is φ = 127181393136.

The previous prime is 381651799283. The next prime is 381651799357. The reversal of 381651799356 is 653997156183.

381651799356 is a `hidden beast` number, since 3 + 81 + 6 + 517 + 9 + 9 + 35 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 381651799293 and 381651799302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381651799357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112090 + ... + 880833.

Almost surely, 2^381651799356 is an apocalyptic number.

381651799356 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

381651799356 is an abundant number, since it is smaller than the sum of its proper divisors (608094843844).

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

381651799356 is a wasteful number, since it uses less digits than its factorization.

381651799356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996495 (or 996487 counting only the distinct ones).

The product of its digits is 36741600, while the sum is 63.

The spelling of 381651799356 in words is "three hundred eighty-one billion, six hundred fifty-one million, seven hundred ninety-nine thousand, three hundred fifty-six".