123780504956694 has 32 divisors (see below), whose sum is σ = 252669116538720. Its totient is φ = 40411515635712.

The previous prime is 123780504956659. The next prime is 123780504956791. The reversal of 123780504956694 is 496659405087321.

It is a super-2 number, since 2×123780504956694² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 337118829 + ... + 337485800.

It is an arithmetic number, because the mean of its divisors is an integer number (7895909891835).

It is a 2-persistent number, because it is pandigital, and so is 2⋅123780504956694 = 247561009913388, but 3⋅123780504956694 = 371341514870082 is not.

Almost surely, 2^{123780504956694} is an apocalyptic number.

123780504956694 is an abundant number, since it is smaller than the sum of its proper divisors (128888611582026).

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

123780504956694 is a wasteful number, since it uses less digits than its factorization.

123780504956694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674605264.

The product of its (nonzero) digits is 391910400, while the sum is 69.

The spelling of 123780504956694 in words is "one hundred twenty-three trillion, seven hundred eighty billion, five hundred four million, nine hundred fifty-six thousand, six hundred ninety-four".