123115084685 has 16 divisors (see below), whose sum is σ = 156442481136. Its totient is φ = 92690178048.

The previous prime is 123115084639. The next prime is 123115084699. The reversal of 123115084685 is 586480511321.

It can be written as a sum of positive squares in 8 ways, for example, as 27509207881 + 95605876804 = 165859^2 + 309202^2 .

It is a cyclic number.

It is not a de Polignac number, because 123115084685 - 2⁶ = 123115084621 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 15 ways as a sum of consecutive naturals, for example, 1000709 + ... + 1116981.

It is an arithmetic number, because the mean of its divisors is an integer number (9777655071).

Almost surely, 2^123115084685 is an apocalyptic number.

It is an amenable number.

123115084685 is a deficient number, since it is larger than the sum of its proper divisors (33327396451).

123115084685 is a wasteful number, since it uses less digits than its factorization.

123115084685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128752.

The product of its (nonzero) digits is 230400, while the sum is 44.

The spelling of 123115084685 in words is "one hundred twenty-three billion, one hundred fifteen million, eighty-four thousand, six hundred eighty-five".