15087397979400 has 192 divisors, whose sum is σ = 48575877611520. Its totient is φ = 3869634643200.

The previous prime is 15087397979387. The next prime is 15087397979417. The reversal of 15087397979400 is 497979378051.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 543609 + ... + 5519991.

It is an arithmetic number, because the mean of its divisors is an integer number (252999362560).

Almost surely, 2^{15087397979400} is an apocalyptic number.

15087397979400 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 15087397979400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24287938805760).

15087397979400 is an abundant number, since it is smaller than the sum of its proper divisors (33488479632120).

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

15087397979400 is a wasteful number, since it uses less digits than its factorization.

15087397979400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4976596 (or 4976587 counting only the distinct ones).

The product of its (nonzero) digits is 120022560, while the sum is 69.

The spelling of 15087397979400 in words is "fifteen trillion, eighty-seven billion, three hundred ninety-seven million, nine hundred seventy-nine thousand, four hundred".