23151791680 has 56 divisors (see below), whose sum is σ = 56412335232. Its totient is φ = 9045345792.

The previous prime is 23151791671. The next prime is 23151791681. The reversal of 23151791680 is 8619715132.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (23151791681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 827512 + ... + 855031.

Almost surely, 2^23151791680 is an apocalyptic number.

23151791680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23151791680 is an abundant number, since it is smaller than the sum of its proper divisors (33260543552).

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

23151791680 is a wasteful number, since it uses less digits than its factorization.

23151791680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682603 (or 1682593 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The spelling of 23151791680 in words is "twenty-three billion, one hundred fifty-one million, seven hundred ninety-one thousand, six hundred eighty".