20220952144 has 10 divisors (see below), whose sum is σ = 39178094810. Its totient is φ = 10110476064.

The previous prime is 20220952109. The next prime is 20220952223. The reversal of 20220952144 is 44125902202.

It can be written as a sum of positive squares in only one way, i.e., 20061889600 + 159062544 = 141640^2 + 12612^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631904739 + ... + 631904770.

It is an arithmetic number, because the mean of its divisors is an integer number (3917809481).

Almost surely, 2^20220952144 is an apocalyptic number.

It is an amenable number.

20220952144 is a deficient number, since it is larger than the sum of its proper divisors (18957142666).

20220952144 is a wasteful number, since it uses less digits than its factorization.

20220952144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263809517 (or 1263809511 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 20220952144 in words is "twenty billion, two hundred twenty million, nine hundred fifty-two thousand, one hundred forty-four".