23815454091664 has 15 divisors (see below), whose sum is σ = 46142480123467. Its totient is φ = 11907717285616.

The previous prime is 23815454091661. The next prime is 23815454091697. The reversal of 23815454091664 is 46619045451832.

The square root of 23815454091664 is 4880108.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23815454091599 and 23815454091608.

It is not an unprimeable number, because it can be changed into a prime (23815454091661) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 18910419 + ... + 20130445.

Almost surely, 2^{23815454091664} is an apocalyptic number.

23815454091664 is the 4880108-th square number.

It is an amenable number.

23815454091664 is a deficient number, since it is larger than the sum of its proper divisors (22327026031803).

23815454091664 is an frugal number, since it uses more digits than its factorization.

23815454091664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440062 (or 1220029 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 58.

The spelling of 23815454091664 in words is "twenty-three trillion, eight hundred fifteen billion, four hundred fifty-four million, ninety-one thousand, six hundred sixty-four".