15790447680 has 448 divisors, whose sum is σ = 59582791680. Its totient is φ = 3467059200.

The previous prime is 15790447661. The next prime is 15790447697. The reversal of 15790447680 is 8674409751.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47705115 + ... + 47705445.

Almost surely, 2^15790447680 is an apocalyptic number.

15790447680 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 15790447680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29791395840).

15790447680 is an abundant number, since it is smaller than the sum of its proper divisors (43792344000).

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

15790447680 is a wasteful number, since it uses less digits than its factorization.

15790447680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 15790447680 in words is "fifteen billion, seven hundred ninety million, four hundred forty-seven thousand, six hundred eighty".