20116623015 has 12 divisors (see below), whose sum is σ = 34868813304. Its totient is φ = 10728865584.

The previous prime is 20116623011. The next prime is 20116623031. The reversal of 20116623015 is 51032661102.

20116623015 is a `hidden beast` number, since 20 + 1 + 1 + 6 + 623 + 0 + 15 = 666.

It is not a de Polignac number, because 20116623015 - 2² = 20116623011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20116623015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20116623011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223517989 + ... + 223518078.

It is an arithmetic number, because the mean of its divisors is an integer number (2905734442).

Almost surely, 2^20116623015 is an apocalyptic number.

20116623015 is a deficient number, since it is larger than the sum of its proper divisors (14752190289).

20116623015 is a wasteful number, since it uses less digits than its factorization.

20116623015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447036078 (or 447036075 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 20116623015 in words is "twenty billion, one hundred sixteen million, six hundred twenty-three thousand, fifteen".