123604754605 has 4 divisors (see below), whose sum is σ = 148325705532. Its totient is φ = 98883803680.

The previous prime is 123604754587. The next prime is 123604754629. The reversal of 123604754605 is 506457406321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506457406321 = 233 ⋅2173636937.

It can be written as a sum of positive squares in 2 ways, for example, as 69694416009 + 53910338596 = 263997^2 + 232186^2 .

It is not a de Polignac number, because 123604754605 - 2⁵ = 123604754573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12360475456 + ... + 12360475465.

It is an arithmetic number, because the mean of its divisors is an integer number (37081426383).

Almost surely, 2^123604754605 is an apocalyptic number.

It is an amenable number.

123604754605 is a deficient number, since it is larger than the sum of its proper divisors (24720950927).

123604754605 is an equidigital number, since it uses as much as digits as its factorization.

123604754605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24720950926.

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 123604754605 in words is "one hundred twenty-three billion, six hundred four million, seven hundred fifty-four thousand, six hundred five".