20934668331 has 72 divisors (see below), whose sum is σ = 32509748544. Its totient is φ = 12977832960.

The previous prime is 20934668317. The next prime is 20934668341. The reversal of 20934668331 is 13386643902.

20934668331 is a `hidden beast` number, since 20 + 93 + 466 + 83 + 3 + 1 = 666.

It is not a de Polignac number, because 20934668331 - 2⁶ = 20934668267 is a prime.

It is a super-2 number, since 2×20934668331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20934668341) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 57042510 + ... + 57042876.

Almost surely, 2^20934668331 is an apocalyptic number.

20934668331 is a deficient number, since it is larger than the sum of its proper divisors (11575080213).

20934668331 is a wasteful number, since it uses less digits than its factorization.

20934668331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 20934668331 in words is "twenty billion, nine hundred thirty-four million, six hundred sixty-eight thousand, three hundred thirty-one".