123475651199 has 4 divisors (see below), whose sum is σ = 123478684440. Its totient is φ = 123472617960.

The previous prime is 123475651181. The next prime is 123475651207. The reversal of 123475651199 is 991156574321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 123475651199 - 2²⁴ = 123458873983 is a prime.

It is a super-2 number, since 2×123475651199² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123475651199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123475051199) 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, 1454717 + ... + 1537254.

It is an arithmetic number, because the mean of its divisors is an integer number (30869671110).

Almost surely, 2^123475651199 is an apocalyptic number.

123475651199 is a deficient number, since it is larger than the sum of its proper divisors (3033241).

123475651199 is an equidigital number, since it uses as much as digits as its factorization.

123475651199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033240.

The product of its digits is 2041200, while the sum is 53.

The spelling of 123475651199 in words is "one hundred twenty-three billion, four hundred seventy-five million, six hundred fifty-one thousand, one hundred ninety-nine".