23106215656440 has 288 divisors, whose sum is σ = 88220555991360. Its totient is φ = 5229129024000.

The previous prime is 23106215656429. The next prime is 23106215656453. The reversal of 23106215656440 is 4465651260132.

23106215656440 is a `hidden beast` number, since 2 + 3 + 1 + 0 + 6 + 2 + 156 + 56 + 440 = 666.

It is a super-2 number, since 2×23106215656440² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4702896 + ... + 8266175.

It is an arithmetic number, because the mean of its divisors is an integer number (306321374970).

Almost surely, 2^{23106215656440} is an apocalyptic number.

23106215656440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23106215656440 is an abundant number, since it is smaller than the sum of its proper divisors (65114340334920).

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

23106215656440 is a wasteful number, since it uses less digits than its factorization.

23106215656440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12969203 (or 12969189 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 23106215656440 in words is "twenty-three trillion, one hundred six billion, two hundred fifteen million, six hundred fifty-six thousand, four hundred forty".