20211749088 has 48 divisors (see below), whose sum is σ = 53101754496. Its totient is φ = 6731419520.

The previous prime is 20211749087. The next prime is 20211749141. The reversal of 20211749088 is 88094711202.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211749083) 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, 21133 + ... + 202163.

It is an arithmetic number, because the mean of its divisors is an integer number (1106286552).

Almost surely, 2^20211749088 is an apocalyptic number.

It is an amenable number.

20211749088 is an abundant number, since it is smaller than the sum of its proper divisors (32890005408).

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

20211749088 is a wasteful number, since it uses less digits than its factorization.

20211749088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182207 (or 182199 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The spelling of 20211749088 in words is "twenty billion, two hundred eleven million, seven hundred forty-nine thousand, eighty-eight".