15158191872 has 144 divisors (see below), whose sum is σ = 41165832960. Its totient is φ = 4950614016.

The previous prime is 15158191847. The next prime is 15158191879. The reversal of 15158191872 is 27819185151.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15158191879) 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, 9361879 + ... + 9363497.

It is an arithmetic number, because the mean of its divisors is an integer number (285873840).

Almost surely, 2^15158191872 is an apocalyptic number.

15158191872 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 15158191872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20582916480).

15158191872 is an abundant number, since it is smaller than the sum of its proper divisors (26007641088).

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

15158191872 is a wasteful number, since it uses less digits than its factorization.

15158191872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878 (or 1864 counting only the distinct ones).

The product of its digits is 201600, while the sum is 48.

The spelling of 15158191872 in words is "fifteen billion, one hundred fifty-eight million, one hundred ninety-one thousand, eight hundred seventy-two".