15378925878720 has 448 divisors, whose sum is σ = 55536304919040. Its totient is φ = 4004146814976.

The previous prime is 15378925878713. The next prime is 15378925878751. The reversal of 15378925878720 is 2787852987351.

15378925878720 is a `hidden beast` number, since 1 + 5 + 37 + 8 + 9 + 2 + 587 + 8 + 7 + 2 + 0 = 666.

It is a super-3 number, since 3×15378925878720³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1234554732 + ... + 1234567188.

Almost surely, 2^{15378925878720} is an apocalyptic number.

15378925878720 is a gapful number since it is divisible by the number (10) 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 15378925878720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27768152459520).

15378925878720 is an abundant number, since it is smaller than the sum of its proper divisors (40157379040320).

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

15378925878720 is a wasteful number, since it uses less digits than its factorization.

15378925878720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15849 (or 15833 counting only the distinct ones).

The product of its (nonzero) digits is 474163200, while the sum is 72.

The spelling of 15378925878720 in words is "fifteen trillion, three hundred seventy-eight billion, nine hundred twenty-five million, eight hundred seventy-eight thousand, seven hundred twenty".