20011010988 has 24 divisors (see below), whose sum is σ = 48722462208. Its totient is φ = 6380322256.

The previous prime is 20011010983. The next prime is 20011010989. The reversal of 20011010988 is 88901011002.

It is a super-2 number, since 2×20011010988² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20011010983) 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, 36251556 + ... + 36252107.

It is an arithmetic number, because the mean of its divisors is an integer number (2030102592).

Almost surely, 2^20011010988 is an apocalyptic number.

It is an amenable number.

20011010988 is an abundant number, since it is smaller than the sum of its proper divisors (28711451220).

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

20011010988 is a wasteful number, since it uses less digits than its factorization.

20011010988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72503693 (or 72503691 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 30.

The spelling of 20011010988 in words is "twenty billion, eleven million, ten thousand, nine hundred eighty-eight".