15944848920 has 1280 divisors, whose sum is σ = 74537971200. Its totient is φ = 2987228160.

The previous prime is 15944848813. The next prime is 15944848921. The reversal of 15944848920 is 2984844951.

It is a happy number.

15944848920 is a `hidden beast` number, since 1 + 594 + 4 + 8 + 48 + 9 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15944848921) by changing a digit.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 370810419 + ... + 370810461.

It is an arithmetic number, because the mean of its divisors is an integer number (58232790).

Almost surely, 2^15944848920 is an apocalyptic number.

15944848920 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 15944848920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37268985600).

15944848920 is an abundant number, since it is smaller than the sum of its proper divisors (58593122280).

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

15944848920 is a wasteful number, since it uses less digits than its factorization.

15944848920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 15944848920 in words is "fifteen billion, nine hundred forty-four million, eight hundred forty-eight thousand, nine hundred twenty".