123980623051 has 4 divisors (see below), whose sum is σ = 124376727592. Its totient is φ = 123584518512.

The previous prime is 123980623037. The next prime is 123980623061. The reversal of 123980623051 is 150326089321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123980623051 is a prime.

It is a super-2 number, since 2×123980623051² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123980622995 and 123980623013.

It is not an unprimeable number, because it can be changed into a prime (123980623061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198051801 + ... + 198052426.

It is an arithmetic number, because the mean of its divisors is an integer number (31094181898).

Almost surely, 2^123980623051 is an apocalyptic number.

123980623051 is a deficient number, since it is larger than the sum of its proper divisors (396104541).

123980623051 is an equidigital number, since it uses as much as digits as its factorization.

123980623051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396104540.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 123980623051 in words is "one hundred twenty-three billion, nine hundred eighty million, six hundred twenty-three thousand, fifty-one".