63806812380 has 72 divisors (see below), whose sum is σ = 193719380400. Its totient is φ = 17000024832.

The previous prime is 63806812373. The next prime is 63806812403. The reversal of 63806812380 is 8321860836.

63806812380 is a `hidden beast` number, since 638 + 0 + 6 + 8 + 1 + 2 + 3 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 46231 + ... + 360209.

It is an arithmetic number, because the mean of its divisors is an integer number (2690546950).

Almost surely, 2^63806812380 is an apocalyptic number.

63806812380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63806812380 is an abundant number, since it is smaller than the sum of its proper divisors (129912568020).

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

63806812380 is a wasteful number, since it uses less digits than its factorization.

63806812380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315123 (or 315118 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 63806812380 in words is "sixty-three billion, eight hundred six million, eight hundred twelve thousand, three hundred eighty".