13663920375 has 224 divisors, whose sum is σ = 30205833216. Its totient is φ = 6036120000.

The previous prime is 13663920371. The next prime is 13663920379. The reversal of 13663920375 is 57302936631.

13663920375 is a `hidden beast` number, since 1 + 3 + 6 + 639 + 2 + 0 + 3 + 7 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (13663920371) and next prime (13663920379).

It is not a de Polignac number, because 13663920375 - 2² = 13663920371 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13663920375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13663920371) by changing a digit.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 19773780 + ... + 19774470.

Almost surely, 2^13663920375 is an apocalyptic number.

13663920375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13663920375 is an abundant number, since it is smaller than the sum of its proper divisors (16541912841).

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

13663920375 is an frugal number, since it uses more digits than its factorization.

13663920375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 45.

The spelling of 13663920375 in words is "thirteen billion, six hundred sixty-three million, nine hundred twenty thousand, three hundred seventy-five".