15649930560 has 224 divisors, whose sum is σ = 54356764032. Its totient is φ = 3783352320.

The previous prime is 15649930537. The next prime is 15649930561. The reversal of 15649930560 is 6503994651.

It is a happy number.

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 (15649930561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4190454 + ... + 4194186.

Almost surely, 2^15649930560 is an apocalyptic number.

15649930560 is a gapful number since it is divisible by the number (10) 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 15649930560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27178382016).

15649930560 is an abundant number, since it is smaller than the sum of its proper divisors (38706833472).

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

15649930560 is a wasteful number, since it uses less digits than its factorization.

15649930560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4161 (or 4151 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 48.

The spelling of 15649930560 in words is "fifteen billion, six hundred forty-nine million, nine hundred thirty thousand, five hundred sixty".