23261556440136 has 32 divisors (see below), whose sum is σ = 66461589829440. Its totient is φ = 6646158982848.

The previous prime is 23261556440117. The next prime is 23261556440149. The reversal of 23261556440136 is 63104465516232.

It is a super-2 number, since 2×23261556440136² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69230822571 + ... + 69230822906.

It is an arithmetic number, because the mean of its divisors is an integer number (2076924682170).

Almost surely, 2^{23261556440136} is an apocalyptic number.

It is an amenable number.

23261556440136 is an abundant number, since it is smaller than the sum of its proper divisors (43200033389304).

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

23261556440136 is a wasteful number, since it uses less digits than its factorization.

23261556440136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138461645493 (or 138461645489 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 48.

The spelling of 23261556440136 in words is "twenty-three trillion, two hundred sixty-one billion, five hundred fifty-six million, four hundred forty thousand, one hundred thirty-six".