20322523430 has 64 divisors (see below), whose sum is σ = 42398095680. Its totient is φ = 6942297600.

The previous prime is 20322523427. The next prime is 20322523433. The reversal of 20322523430 is 3432522302.

It is an interprime number because it is at equal distance from previous prime (20322523427) and next prime (20322523433).

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 20322523430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20322523433) 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, 31940 + ... + 204120.

It is an arithmetic number, because the mean of its divisors is an integer number (662470245).

Almost surely, 2^20322523430 is an apocalyptic number.

20322523430 is an abundant number, since it is smaller than the sum of its proper divisors (22075572250).

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

20322523430 is a wasteful number, since it uses less digits than its factorization.

20322523430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172265.

The product of its (nonzero) digits is 8640, while the sum is 26.

The spelling of 20322523430 in words is "twenty billion, three hundred twenty-two million, five hundred twenty-three thousand, four hundred thirty".