20658625893 has 12 divisors (see below), whose sum is σ = 29918154240. Its totient is φ = 13736455656.

The previous prime is 20658625807. The next prime is 20658625909. The reversal of 20658625893 is 39852685602.

20658625893 is a `hidden beast` number, since 2 + 0 + 6 + 5 + 8 + 625 + 8 + 9 + 3 = 666.

It is not a de Polignac number, because 20658625893 - 2¹³ = 20658617701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20658625693) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2993163 + ... + 3000056.

It is an arithmetic number, because the mean of its divisors is an integer number (2493179520).

Almost surely, 2^20658625893 is an apocalyptic number.

It is an amenable number.

20658625893 is a deficient number, since it is larger than the sum of its proper divisors (9259528347).

20658625893 is a wasteful number, since it uses less digits than its factorization.

20658625893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5993608 (or 5993605 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 20658625893 in words is "twenty billion, six hundred fifty-eight million, six hundred twenty-five thousand, eight hundred ninety-three".