15243969936 has 80 divisors (see below), whose sum is σ = 42622966400. Its totient is φ = 4666844160.

The previous prime is 15243969901. The next prime is 15243969941. The reversal of 15243969936 is 63996934251.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62796 + ... + 185556.

It is an arithmetic number, because the mean of its divisors is an integer number (532787080).

Almost surely, 2^15243969936 is an apocalyptic number.

15243969936 is a gapful number since it is divisible by the number (16) 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 15243969936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21311483200).

15243969936 is an abundant number, since it is smaller than the sum of its proper divisors (27378996464).

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

15243969936 is a wasteful number, since it uses less digits than its factorization.

15243969936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122984 (or 122978 counting only the distinct ones).

The product of its digits is 9447840, while the sum is 57.

The spelling of 15243969936 in words is "fifteen billion, two hundred forty-three million, nine hundred sixty-nine thousand, nine hundred thirty-six".