15797845044 has 288 divisors, whose sum is σ = 44910028800. Its totient is φ = 4843732608.

The previous prime is 15797845039. The next prime is 15797845139. The reversal of 15797845044 is 44054879751.

15797845044 is a `hidden beast` number, since 1 + 57 + 9 + 7 + 84 + 504 + 4 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 79386057 + ... + 79386255.

It is an arithmetic number, because the mean of its divisors is an integer number (155937600).

Almost surely, 2^15797845044 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 15797845044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22455014400).

15797845044 is an abundant number, since it is smaller than the sum of its proper divisors (29112183756).

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

15797845044 is a wasteful number, since it uses less digits than its factorization.

15797845044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 15797845044 in words is "fifteen billion, seven hundred ninety-seven million, eight hundred forty-five thousand, forty-four".