20801299932 has 60 divisors (see below), whose sum is σ = 62147100400. Its totient is φ = 5943227904.

The previous prime is 20801299913. The next prime is 20801299933. The reversal of 20801299932 is 23999210802.

It is a happy number.

It is a super-2 number, since 2×20801299932² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20801299933) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4583557 + ... + 4588092.

Almost surely, 2^20801299932 is an apocalyptic number.

It is an amenable number.

20801299932 is an abundant number, since it is smaller than the sum of its proper divisors (41345800468).

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

20801299932 is a wasteful number, since it uses less digits than its factorization.

20801299932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9171672 (or 9171661 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 20801299932 in words is "twenty billion, eight hundred one million, two hundred ninety-nine thousand, nine hundred thirty-two".