20320613430 has 64 divisors (see below), whose sum is σ = 55285251840. Its totient is φ = 4738732416.

The previous prime is 20320613407. The next prime is 20320613431. The reversal of 20320613430 is 3431602302.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20320613430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320613431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1363752 + ... + 1378571.

It is an arithmetic number, because the mean of its divisors is an integer number (863832060).

Almost surely, 2^20320613430 is an apocalyptic number.

20320613430 is an abundant number, since it is smaller than the sum of its proper divisors (34964638410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20320613430 is a wasteful number, since it uses less digits than its factorization.

20320613430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742365.

The product of its (nonzero) digits is 2592, while the sum is 24.

The spelling of 20320613430 in words is "twenty billion, three hundred twenty million, six hundred thirteen thousand, four hundred thirty".