13863212640 has 96 divisors (see below), whose sum is σ = 48521259360. Its totient is φ = 3696855552.

The previous prime is 13863212609. The next prime is 13863212653. The reversal of 13863212640 is 4621236831.

13863212640 is a `hidden beast` number, since 1 + 3 + 8 + 6 + 3 + 2 + 1 + 2 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a junction number, because it is equal to n+sod(n) for n = 13863212595 and 13863212604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1600219 + ... + 1608858.

It is an arithmetic number, because the mean of its divisors is an integer number (505429785).

Almost surely, 2^13863212640 is an apocalyptic number.

13863212640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13863212640 is an abundant number, since it is smaller than the sum of its proper divisors (34658046720).

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

13863212640 is a wasteful number, since it uses less digits than its factorization.

13863212640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3209101 (or 3209087 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 13863212640 in words is "thirteen billion, eight hundred sixty-three million, two hundred twelve thousand, six hundred forty".