123404132251503 has 12 divisors (see below), whose sum is σ = 182597984307648. Its totient is φ = 80262850244640.

The previous prime is 123404132251429. The next prime is 123404132251529. The reversal of 123404132251503 is 305152231404321.

123404132251503 is a `hidden beast` number, since 1 + 2 + 3 + 4 + 0 + 4 + 132 + 2 + 515 + 0 + 3 = 666.

It is not a de Polignac number, because 123404132251503 - 2¹⁴ = 123404132235119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123404132251303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167214270975 + ... + 167214271712.

It is an arithmetic number, because the mean of its divisors is an integer number (15216498692304).

Almost surely, 2^{123404132251503} is an apocalyptic number.

123404132251503 is a deficient number, since it is larger than the sum of its proper divisors (59193852056145).

123404132251503 is a wasteful number, since it uses less digits than its factorization.

123404132251503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334428542734 (or 334428542731 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 123404132251503 its reverse (305152231404321), we get a palindrome (428556363655824).

The spelling of 123404132251503 in words is "one hundred twenty-three trillion, four hundred four billion, one hundred thirty-two million, two hundred fifty-one thousand, five hundred three".