20552984190 has 192 divisors, whose sum is σ = 61483069440. Its totient is φ = 4729052160.

The previous prime is 20552984189. The next prime is 20552984201. The reversal of 20552984190 is 9148925502.

It is a happy number.

20552984190 is a `hidden beast` number, since 2 + 0 + 552 + 9 + 8 + 4 + 1 + 90 = 666.

It is a super-2 number, since 2×20552984190² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 889767 + ... + 912573.

It is an arithmetic number, because the mean of its divisors is an integer number (320224320).

Almost surely, 2^20552984190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20552984190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30741534720).

20552984190 is an abundant number, since it is smaller than the sum of its proper divisors (40930085250).

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

20552984190 is a wasteful number, since it uses less digits than its factorization.

20552984190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22887 (or 22884 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 20552984190 in words is "twenty billion, five hundred fifty-two million, nine hundred eighty-four thousand, one hundred ninety".