20623643130 has 32 divisors (see below), whose sum is σ = 49782864384. Its totient is φ = 5467846976.

The previous prime is 20623643129. The next prime is 20623643153. The reversal of 20623643130 is 3134632602.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1981674 + ... + 1992053.

It is an arithmetic number, because the mean of its divisors is an integer number (1555714512).

Almost surely, 2^20623643130 is an apocalyptic number.

20623643130 is an abundant number, since it is smaller than the sum of its proper divisors (29159221254).

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

20623643130 is a wasteful number, since it uses less digits than its factorization.

20623643130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3973910.

The product of its (nonzero) digits is 15552, while the sum is 30.

The spelling of 20623643130 in words is "twenty billion, six hundred twenty-three million, six hundred forty-three thousand, one hundred thirty".