638274000312 has 96 divisors (see below), whose sum is σ = 1861780284000. Its totient is φ = 196376410368.

The previous prime is 638274000307. The next prime is 638274000347. The reversal of 638274000312 is 213000472836.

It is a happy number.

638274000312 is a `hidden beast` number, since 638 + 2 + 7 + 4 + 0 + 0 + 0 + 3 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 18655173 + ... + 18689355.

It is an arithmetic number, because the mean of its divisors is an integer number (19393544625).

Almost surely, 2^638274000312 is an apocalyptic number.

It is an amenable number.

638274000312 is an abundant number, since it is smaller than the sum of its proper divisors (1223506283688).

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

638274000312 is a wasteful number, since it uses less digits than its factorization.

638274000312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54157 (or 54150 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 638274000312 in words is "six hundred thirty-eight billion, two hundred seventy-four million, three hundred twelve", and thus it is an aban number.