15791623680 has 640 divisors, whose sum is σ = 62875118592. Its totient is φ = 3298295808.

The previous prime is 15791623667. The next prime is 15791623681. The reversal of 15791623680 is 8632619751.

It is a tau number, because it is divible by the number of its divisors (640).

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 (15791623681) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33814807 + ... + 33815273.

Almost surely, 2^15791623680 is an apocalyptic number.

15791623680 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 15791623680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31437559296).

15791623680 is an abundant number, since it is smaller than the sum of its proper divisors (47083494912).

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

15791623680 is a wasteful number, since it uses less digits than its factorization.

15791623680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 15791623680 in words is "fifteen billion, seven hundred ninety-one million, six hundred twenty-three thousand, six hundred eighty".