15389847512 has 48 divisors (see below), whose sum is σ = 31318314720. Its totient is φ = 7047967680.

The previous prime is 15389847497. The next prime is 15389847521. The reversal of 15389847512 is 21574898351.

It is a super-2 number, since 2×15389847512² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1780433 + ... + 1789055.

It is an arithmetic number, because the mean of its divisors is an integer number (652464890).

Almost surely, 2^15389847512 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 15389847512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15659157360).

15389847512 is an abundant number, since it is smaller than the sum of its proper divisors (15928467208).

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

15389847512 is a wasteful number, since it uses less digits than its factorization.

15389847512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8904 (or 8769 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 53.

The spelling of 15389847512 in words is "fifteen billion, three hundred eighty-nine million, eight hundred forty-seven thousand, five hundred twelve".