123503243402889 has 64 divisors (see below), whose sum is σ = 213535280640000. Its totient is φ = 70519769827920.

The previous prime is 123503243402881. The next prime is 123503243402893. The reversal of 123503243402889 is 988204342305321.

123503243402889 is a `hidden beast` number, since 1 + 2 + 3 + 5 + 0 + 324 + 34 + 0 + 288 + 9 = 666.

It is not a de Polignac number, because 123503243402889 - 2³ = 123503243402881 is a prime.

It is a super-2 number, since 2×123503243402889² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123503243402881) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7159974 + ... + 17270544.

It is an arithmetic number, because the mean of its divisors is an integer number (3336488760000).

Almost surely, 2^{123503243402889} is an apocalyptic number.

It is an amenable number.

123503243402889 is a deficient number, since it is larger than the sum of its proper divisors (90032037237111).

123503243402889 is a wasteful number, since it uses less digits than its factorization.

123503243402889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10111920 (or 10111900 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 123503243402889 in words is "one hundred twenty-three trillion, five hundred three billion, two hundred forty-three million, four hundred two thousand, eight hundred eighty-nine".