123875661620 has 48 divisors (see below), whose sum is σ = 267951750528. Its totient is φ = 48077366400.

The previous prime is 123875661617. The next prime is 123875661647. The reversal of 123875661620 is 26166578321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347099 + ... + 606818.

It is an arithmetic number, because the mean of its divisors is an integer number (5582328136).

Almost surely, 2^123875661620 is an apocalyptic number.

123875661620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123875661620 is an abundant number, since it is smaller than the sum of its proper divisors (144076088908).

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

123875661620 is a wasteful number, since it uses less digits than its factorization.

123875661620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954120 (or 954118 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 123875661620 in words is "one hundred twenty-three billion, eight hundred seventy-five million, six hundred sixty-one thousand, six hundred twenty".