20133774879309 has 192 divisors, whose sum is σ = 36684456460288. Its totient is φ = 10359367603200.

The previous prime is 20133774879289. The next prime is 20133774879313. The reversal of 20133774879309 is 90397847733102.

20133774879309 is a `hidden beast` number, since 20 + 1 + 33 + 77 + 487 + 9 + 30 + 9 = 666.

It is not a de Polignac number, because 20133774879309 - 2²⁰ = 20133773830733 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20133774879319) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2513262114 + ... + 2513270124.

Almost surely, 2^{20133774879309} is an apocalyptic number.

It is an amenable number.

20133774879309 is a deficient number, since it is larger than the sum of its proper divisors (16550681580979).

20133774879309 is a wasteful number, since it uses less digits than its factorization.

20133774879309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8568 (or 8565 counting only the distinct ones).

The product of its (nonzero) digits is 48009024, while the sum is 63.

The spelling of 20133774879309 in words is "twenty trillion, one hundred thirty-three billion, seven hundred seventy-four million, eight hundred seventy-nine thousand, three hundred nine".