123545551351233 has 24 divisors (see below), whose sum is σ = 181072658688544. Its totient is φ = 74872512570240.

The previous prime is 123545551351219. The next prime is 123545551351273. The reversal of 123545551351233 is 332153155545321.

It is a happy number.

It is not a de Polignac number, because 123545551351233 - 2²² = 123545547156929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123545551351273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 520216 + ... + 15727737.

Almost surely, 2^{123545551351233} is an apocalyptic number.

It is an amenable number.

123545551351233 is a deficient number, since it is larger than the sum of its proper divisors (57527107337311).

123545551351233 is a wasteful number, since it uses less digits than its factorization.

123545551351233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16268925 (or 16268914 counting only the distinct ones).

The product of its digits is 4050000, while the sum is 48.

The spelling of 123545551351233 in words is "one hundred twenty-three trillion, five hundred forty-five billion, five hundred fifty-one million, three hundred fifty-one thousand, two hundred thirty-three".