20270900144 has 60 divisors (see below), whose sum is σ = 43295106168. Its totient is φ = 9118310400.

The previous prime is 20270900131. The next prime is 20270900189. The reversal of 20270900144 is 44100907202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1649864 + ... + 1662104.

Almost surely, 2^20270900144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20270900144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21647553084).

20270900144 is an abundant number, since it is smaller than the sum of its proper divisors (23024206024).

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

20270900144 is a wasteful number, since it uses less digits than its factorization.

20270900144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12454 (or 12351 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The spelling of 20270900144 in words is "twenty billion, two hundred seventy million, nine hundred thousand, one hundred forty-four".