15878557120 has 112 divisors (see below), whose sum is σ = 39092721408. Its totient is φ = 6136750080.

The previous prime is 15878557103. The next prime is 15878557129. The reversal of 15878557120 is 2175587851.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15878557129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11079924 + ... + 11081356.

Almost surely, 2^15878557120 is an apocalyptic number.

15878557120 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 15878557120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19546360704).

15878557120 is an abundant number, since it is smaller than the sum of its proper divisors (23214164288).

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

15878557120 is a wasteful number, since it uses less digits than its factorization.

15878557120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598 (or 2588 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 49.

The spelling of 15878557120 in words is "fifteen billion, eight hundred seventy-eight million, five hundred fifty-seven thousand, one hundred twenty".