123121841975660 has 96 divisors (see below), whose sum is σ = 286691072721984. Its totient is φ = 44036669952000.

The previous prime is 123121841975659. The next prime is 123121841975723. The reversal of 123121841975660 is 66579148121321.

It is a junction number, because it is equal to n+sod(n) for n = 123121841975596 and 123121841975605.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1000010264 + ... + 1000133376.

It is an arithmetic number, because the mean of its divisors is an integer number (2986365340854).

It is a 1-persistent number, because it is pandigital, but 2⋅123121841975660 = 246243683951320 is not.

Almost surely, 2^{123121841975660} is an apocalyptic number.

123121841975660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123121841975660 is an abundant number, since it is smaller than the sum of its proper divisors (163569230746324).

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

123121841975660 is a wasteful number, since it uses less digits than its factorization.

123121841975660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197715 (or 197713 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 123121841975660 in words is "one hundred twenty-three trillion, one hundred twenty-one billion, eight hundred forty-one million, nine hundred seventy-five thousand, six hundred sixty".