20123608615 has 64 divisors (see below), whose sum is σ = 28617007104. Its totient is φ = 13544256000.

The previous prime is 20123608511. The next prime is 20123608621. The reversal of 20123608615 is 51680632102.

It is not a de Polignac number, because 20123608615 - 2⁹ = 20123608103 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 63 ways as a sum of consecutive naturals, for example, 4742895 + ... + 4747135.

It is an arithmetic number, because the mean of its divisors is an integer number (447140736).

Almost surely, 2^20123608615 is an apocalyptic number.

20123608615 is a deficient number, since it is larger than the sum of its proper divisors (8493398489).

20123608615 is a wasteful number, since it uses less digits than its factorization.

20123608615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4333 (or 4311 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 20123608615 in words is "twenty billion, one hundred twenty-three million, six hundred eight thousand, six hundred fifteen".