20530620093 has 16 divisors (see below), whose sum is σ = 28676563200. Its totient is φ = 13047827520.

The previous prime is 20530620079. The next prime is 20530620109. The reversal of 20530620093 is 39002603502.

It is not a de Polignac number, because 20530620093 - 2⁶ = 20530620029 is a prime.

It is a super-2 number, since 2×20530620093² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20530620093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20530620013) 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, 1486698 + ... + 1500443.

It is an arithmetic number, because the mean of its divisors is an integer number (1792285200).

Almost surely, 2^20530620093 is an apocalyptic number.

It is an amenable number.

20530620093 is a deficient number, since it is larger than the sum of its proper divisors (8145943107).

20530620093 is a wasteful number, since it uses less digits than its factorization.

20530620093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2987252.

The product of its (nonzero) digits is 9720, while the sum is 30.

The spelling of 20530620093 in words is "twenty billion, five hundred thirty million, six hundred twenty thousand, ninety-three".