20166602054631 has 16 divisors (see below), whose sum is σ = 26905194607104. Its totient is φ = 13436207484224.

The previous prime is 20166602054611. The next prime is 20166602054653. The reversal of 20166602054631 is 13645020666102.

It is a cyclic number.

It is not a de Polignac number, because 20166602054631 - 2⁶ = 20166602054567 is a prime.

It is a super-2 number, since 2×20166602054631² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20166602054611) 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, 39764056 + ... + 40268018.

It is an arithmetic number, because the mean of its divisors is an integer number (1681574662944).

Almost surely, 2^{20166602054631} is an apocalyptic number.

20166602054631 is a deficient number, since it is larger than the sum of its proper divisors (6738592552473).

20166602054631 is a wasteful number, since it uses less digits than its factorization.

20166602054631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512070.

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 20166602054631 in words is "twenty trillion, one hundred sixty-six billion, six hundred two million, fifty-four thousand, six hundred thirty-one".