20880986142 has 16 divisors (see below), whose sum is σ = 41764318992. Its totient is φ = 6959937600.

The previous prime is 20880986123. The next prime is 20880986143. The reversal of 20880986142 is 24168908802.

It is a junction number, because it is equal to n+sod(n) for n = 20880986091 and 20880986100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20880986143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30928 + ... + 206684.

It is an arithmetic number, because the mean of its divisors is an integer number (2610269937).

Almost surely, 2^20880986142 is an apocalyptic number.

20880986142 is an abundant number, since it is smaller than the sum of its proper divisors (20883332850).

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

20880986142 is a wasteful number, since it uses less digits than its factorization.

20880986142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195563.

The product of its (nonzero) digits is 442368, while the sum is 48.

The spelling of 20880986142 in words is "twenty billion, eight hundred eighty million, nine hundred eighty-six thousand, one hundred forty-two".