20660675061 has 16 divisors (see below), whose sum is σ = 29676971520. Its totient is φ = 12709821120.

The previous prime is 20660675011. The next prime is 20660675141. The reversal of 20660675061 is 16057606602.

It is not a de Polignac number, because 20660675061 - 2⁷ = 20660674933 is a prime.

It is a super-3 number, since 3×20660675061³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20660675011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22396 + ... + 204506.

It is an arithmetic number, because the mean of its divisors is an integer number (1854810720).

Almost surely, 2^20660675061 is an apocalyptic number.

It is an amenable number.

20660675061 is a deficient number, since it is larger than the sum of its proper divisors (9016296459).

20660675061 is a wasteful number, since it uses less digits than its factorization.

20660675061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185036.

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 20660675061 in words is "twenty billion, six hundred sixty million, six hundred seventy-five thousand, sixty-one".