20616676056173 has 4 divisors (see below), whose sum is σ = 20616727124448. Its totient is φ = 20616624987900.

The previous prime is 20616676056169. The next prime is 20616676056191. The reversal of 20616676056173 is 37165067661602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20616676056173 - 2² = 20616676056169 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20616676056073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24923711 + ... + 25737612.

It is an arithmetic number, because the mean of its divisors is an integer number (5154181781112).

Almost surely, 2^{20616676056173} is an apocalyptic number.

It is an amenable number.

20616676056173 is a deficient number, since it is larger than the sum of its proper divisors (51068275).

20616676056173 is an equidigital number, since it uses as much as digits as its factorization.

20616676056173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51068274.

The product of its (nonzero) digits is 11430720, while the sum is 56.

The spelling of 20616676056173 in words is "twenty trillion, six hundred sixteen billion, six hundred seventy-six million, fifty-six thousand, one hundred seventy-three".