123405400296606 has 32 divisors (see below), whose sum is σ = 265229517070080. Its totient is φ = 38137577613696.

The previous prime is 123405400296599. The next prime is 123405400296611. The reversal of 123405400296606 is 606692004504321.

It is a congruent number.

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, 9028775746 + ... + 9028789413.

It is an arithmetic number, because the mean of its divisors is an integer number (8288422408440).

Almost surely, 2^{123405400296606} is an apocalyptic number.

123405400296606 is an abundant number, since it is smaller than the sum of its proper divisors (141824116773474).

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

123405400296606 is a wasteful number, since it uses less digits than its factorization.

123405400296606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18057565248.

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 123405400296606 in words is "one hundred twenty-three trillion, four hundred five billion, four hundred million, two hundred ninety-six thousand, six hundred six".