23779701915816 has 512 divisors, whose sum is σ = 79680714301440. Its totient is φ = 5724364800000.

The previous prime is 23779701915803. The next prime is 23779701915817. The reversal of 23779701915816 is 61851910797732.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (23779701915817) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1965096166 + ... + 1965108266.

It is an arithmetic number, because the mean of its divisors is an integer number (155626395120).

Almost surely, 2^{23779701915816} 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 23779701915816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39840357150720).

23779701915816 is an abundant number, since it is smaller than the sum of its proper divisors (55901012385624).

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

23779701915816 is a wasteful number, since it uses less digits than its factorization.

23779701915816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13097 (or 13093 counting only the distinct ones).

The product of its (nonzero) digits is 40007520, while the sum is 66.

The spelling of 23779701915816 in words is "twenty-three trillion, seven hundred seventy-nine billion, seven hundred one million, nine hundred fifteen thousand, eight hundred sixteen".