123309545045 has 32 divisors (see below), whose sum is σ = 156888576000. Its totient is φ = 92780271936.

The previous prime is 123309544979. The next prime is 123309545053. The reversal of 123309545045 is 540545903321.

It is a cyclic number.

It is not a de Polignac number, because 123309545045 - 2²⁰ = 123308496469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123309544993 and 123309545011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8821652 + ... + 8835618.

It is an arithmetic number, because the mean of its divisors is an integer number (4902768000).

Almost surely, 2^123309545045 is an apocalyptic number.

It is an amenable number.

123309545045 is a deficient number, since it is larger than the sum of its proper divisors (33579030955).

123309545045 is a wasteful number, since it uses less digits than its factorization.

123309545045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14657.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 123309545045 in words is "one hundred twenty-three billion, three hundred nine million, five hundred forty-five thousand, forty-five".