23515162056 has 128 divisors (see below), whose sum is σ = 67043376000. Its totient is φ = 7634221056.

The previous prime is 23515162051. The next prime is 23515162057. The reversal of 23515162056 is 65026151532.

23515162056 is a `hidden beast` number, since 23 + 5 + 1 + 5 + 1 + 620 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 23515162056.

It is not an unprimeable number, because it can be changed into a prime (23515162051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1278880 + ... + 1297136.

It is an arithmetic number, because the mean of its divisors is an integer number (523776375).

Almost surely, 2^23515162056 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 23515162056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33521688000).

23515162056 is an abundant number, since it is smaller than the sum of its proper divisors (43528213944).

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

23515162056 is a wasteful number, since it uses less digits than its factorization.

23515162056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18428 (or 18418 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 23515162056 in words is "twenty-three billion, five hundred fifteen million, one hundred sixty-two thousand, fifty-six".