23813551706640 has 80 divisors (see below), whose sum is σ = 73822589206656. Its totient is φ = 6350230656000.

The previous prime is 23813551706617. The next prime is 23813551706663. The reversal of 23813551706640 is 4660715531832.

It is an interprime number because it is at equal distance from previous prime (23813551706617) and next prime (23813551706663).

It is a tau number, because it is divible by the number of its divisors (80).

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 15 ways as a sum of consecutive naturals, for example, 38261940 + ... + 38879340.

Almost surely, 2^{23813551706640} is an apocalyptic number.

23813551706640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23813551706640 is an abundant number, since it is smaller than the sum of its proper divisors (50009037500016).

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

23813551706640 is a wasteful number, since it uses less digits than its factorization.

23813551706640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778128 (or 778122 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 51.

The spelling of 23813551706640 in words is "twenty-three trillion, eight hundred thirteen billion, five hundred fifty-one million, seven hundred six thousand, six hundred forty".