15919489872 has 720 divisors, whose sum is σ = 57989830080. Its totient is φ = 4187842560.

The previous prime is 15919489847. The next prime is 15919489879. The reversal of 15919489872 is 27898491951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15919489879) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 116200588 + ... + 116200724.

Almost surely, 2^15919489872 is an apocalyptic number.

15919489872 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 15919489872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28994915040).

15919489872 is an abundant number, since it is smaller than the sum of its proper divisors (42070340208).

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

15919489872 is a wasteful number, since it uses less digits than its factorization.

15919489872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 185 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 63.

The spelling of 15919489872 in words is "fifteen billion, nine hundred nineteen million, four hundred eighty-nine thousand, eight hundred seventy-two".