20616615124523 has 12 divisors (see below), whose sum is σ = 22885606819824. Its totient is φ = 18556809282000.

The previous prime is 20616615124429. The next prime is 20616615124529. The reversal of 20616615124523 is 32542151661602.

It is not a de Polignac number, because 20616615124523 - 2⁴² = 16218568613419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20616615124529) 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, 843479111 + ... + 843503552.

It is an arithmetic number, because the mean of its divisors is an integer number (1907133901652).

Almost surely, 2^{20616615124523} is an apocalyptic number.

20616615124523 is a deficient number, since it is larger than the sum of its proper divisors (2268991695301).

20616615124523 is a wasteful number, since it uses less digits than its factorization.

20616615124523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686982786 (or 1686982775 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 20616615124523 in words is "twenty trillion, six hundred sixteen billion, six hundred fifteen million, one hundred twenty-four thousand, five hundred twenty-three".