20102020988 has 48 divisors (see below), whose sum is σ = 40832300544. Its totient is φ = 8480704320.

The previous prime is 20102020949. The next prime is 20102020993. The reversal of 20102020988 is 88902020102.

It is a super-2 number, since 2×20102020988² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3698633 + ... + 3704063.

It is an arithmetic number, because the mean of its divisors is an integer number (850672928).

Almost surely, 2^20102020988 is an apocalyptic number.

20102020988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20102020988 is an abundant number, since it is smaller than the sum of its proper divisors (20730279556).

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

20102020988 is a wasteful number, since it uses less digits than its factorization.

20102020988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7482 (or 7480 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The spelling of 20102020988 in words is "twenty billion, one hundred two million, twenty thousand, nine hundred eighty-eight".