20330553100 has 216 divisors, whose sum is σ = 52517322704. Its totient is φ = 6785856000.

The previous prime is 20330553091. The next prime is 20330553119. The reversal of 20330553100 is 135503302.

It is a happy number.

It is a super-2 number, since 2×20330553100² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 48290890 + ... + 48291310.

Almost surely, 2^20330553100 is an apocalyptic number.

20330553100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20330553100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26258661352).

20330553100 is an abundant number, since it is smaller than the sum of its proper divisors (32186769604).

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

20330553100 is a wasteful number, since it uses less digits than its factorization.

20330553100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 759 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 22.

The spelling of 20330553100 in words is "twenty billion, three hundred thirty million, five hundred fifty-three thousand, one hundred".