15877998000 has 320 divisors, whose sum is σ = 57134438400. Its totient is φ = 4215110400.

The previous prime is 15877997987. The next prime is 15877998007. The reversal of 15877998000 is 89977851.

It is a super-2 number, since 2×15877998000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (15877998007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15281481 + ... + 15282519.

It is an arithmetic number, because the mean of its divisors is an integer number (178545120).

Almost surely, 2^15877998000 is an apocalyptic number.

15877998000 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 15877998000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28567219200).

15877998000 is an abundant number, since it is smaller than the sum of its proper divisors (41256440400).

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

15877998000 is a wasteful number, since it uses less digits than its factorization.

15877998000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354 (or 1332 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The spelling of 15877998000 in words is "fifteen billion, eight hundred seventy-seven million, nine hundred ninety-eight thousand".