15151197816 has 96 divisors (see below), whose sum is σ = 43714944000. Its totient is φ = 4726907712.

The previous prime is 15151197779. The next prime is 15151197829. The reversal of 15151197816 is 61879115151.

15151197816 is a `hidden beast` number, since 1 + 51 + 511 + 9 + 7 + 81 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46825 + ... + 180263.

It is an arithmetic number, because the mean of its divisors is an integer number (455364000).

Almost surely, 2^15151197816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15151197816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21857472000).

15151197816 is an abundant number, since it is smaller than the sum of its proper divisors (28563746184).

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

15151197816 is a wasteful number, since it uses less digits than its factorization.

15151197816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133553 (or 133546 counting only the distinct ones).

The product of its digits is 75600, while the sum is 45.

The spelling of 15151197816 in words is "fifteen billion, one hundred fifty-one million, one hundred ninety-seven thousand, eight hundred sixteen".