123881447707 has 4 divisors (see below), whose sum is σ = 123882226360. Its totient is φ = 123880669056.

The previous prime is 123881447647. The next prime is 123881447713. The reversal of 123881447707 is 707744188321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 123881447707 - 2²³ = 123873059099 is a prime.

It is a super-2 number, since 2×123881447707² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123881447747) 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, 54957 + ... + 500782.

It is an arithmetic number, because the mean of its divisors is an integer number (30970556590).

Almost surely, 2^123881447707 is an apocalyptic number.

123881447707 is a deficient number, since it is larger than the sum of its proper divisors (778653).

123881447707 is an equidigital number, since it uses as much as digits as its factorization.

123881447707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778652.

The product of its (nonzero) digits is 2107392, while the sum is 52.

The spelling of 123881447707 in words is "one hundred twenty-three billion, eight hundred eighty-one million, four hundred forty-seven thousand, seven hundred seven".