23506661155464 has 256 divisors, whose sum is σ = 67908243456000. Its totient is φ = 7529137539840.

The previous prime is 23506661155427. The next prime is 23506661155477. The reversal of 23506661155464 is 46455116660532.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 23506661155464.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 172201062 + ... + 172337514.

It is an arithmetic number, because the mean of its divisors is an integer number (265266576000).

Almost surely, 2^{23506661155464} is an apocalyptic number.

23506661155464 is a gapful number since it is divisible by the number (24) 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 23506661155464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33954121728000).

23506661155464 is an abundant number, since it is smaller than the sum of its proper divisors (44401582300536).

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

23506661155464 is a wasteful number, since it uses less digits than its factorization.

23506661155464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136825 (or 136815 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 54.

The spelling of 23506661155464 in words is "twenty-three trillion, five hundred six billion, six hundred sixty-one million, one hundred fifty-five thousand, four hundred sixty-four".