123826611226440 has 64 divisors (see below), whose sum is σ = 371501088033600. Its totient is φ = 33018540384512.

The previous prime is 123826611226433. The next prime is 123826611226481. The reversal of 123826611226440 is 44622116628321.

It is a self number, because there is not a number n which added to its sum of digits gives 123826611226440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27413235 + ... + 31609154.

It is an arithmetic number, because the mean of its divisors is an integer number (5804704500525).

Almost surely, 2^{123826611226440} is an apocalyptic number.

123826611226440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123826611226440 is an abundant number, since it is smaller than the sum of its proper divisors (247674476807160).

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

123826611226440 is a wasteful number, since it uses less digits than its factorization.

123826611226440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59039886 (or 59039882 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 48.

The spelling of 123826611226440 in words is "one hundred twenty-three trillion, eight hundred twenty-six billion, six hundred eleven million, two hundred twenty-six thousand, four hundred forty".