20670505620607 has 16 divisors (see below), whose sum is σ = 22509094809600. Its totient is φ = 18907005852000.

The previous prime is 20670505620587. The next prime is 20670505620623. The reversal of 20670505620607 is 70602650507602.

It is a cyclic number.

It is not a de Polignac number, because 20670505620607 - 2¹⁵ = 20670505587839 is a prime.

It is a super-2 number, since 2×20670505620607² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20670505620697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36498798 + ... + 37060804.

It is an arithmetic number, because the mean of its divisors is an integer number (1406818425600).

Almost surely, 2^{20670505620607} is an apocalyptic number.

20670505620607 is a deficient number, since it is larger than the sum of its proper divisors (1838589188993).

20670505620607 is a wasteful number, since it uses less digits than its factorization.

20670505620607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628806.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 20670505620607 in words is "twenty trillion, six hundred seventy billion, five hundred five million, six hundred twenty thousand, six hundred seven".