15379763868 has 180 divisors, whose sum is σ = 46888951032. Its totient is φ = 4383046080.

The previous prime is 15379763863. The next prime is 15379763869. The reversal of 15379763868 is 86836797351.

15379763868 is a `hidden beast` number, since 1 + 537 + 9 + 7 + 6 + 38 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15379763863) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 7794130 + ... + 7796102.

Almost surely, 2^15379763868 is an apocalyptic number.

15379763868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15379763868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23444475516).

15379763868 is an abundant number, since it is smaller than the sum of its proper divisors (31509187164).

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

15379763868 is a wasteful number, since it uses less digits than its factorization.

15379763868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494 (or 2476 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 63.

The spelling of 15379763868 in words is "fifteen billion, three hundred seventy-nine million, seven hundred sixty-three thousand, eight hundred sixty-eight".