15420367872 has 616 divisors, whose sum is σ = 57133505856. Its totient is φ = 4048994304.

The previous prime is 15420367801. The next prime is 15420367903. The reversal of 15420367872 is 27876302451.

15420367872 is a `hidden beast` number, since 1 + 542 + 0 + 36 + 7 + 8 + 72 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 67931023 + ... + 67931249.

Almost surely, 2^15420367872 is an apocalyptic number.

15420367872 is a gapful number since it is divisible by the number (12) 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 15420367872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28566752928).

15420367872 is an abundant number, since it is smaller than the sum of its proper divisors (41713137984).

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

15420367872 is an equidigital number, since it uses as much as digits as its factorization.

15420367872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 15420367872 in words is "fifteen billion, four hundred twenty million, three hundred sixty-seven thousand, eight hundred seventy-two".