20281044448052 has 24 divisors (see below), whose sum is σ = 35537819742600. Its totient is φ = 10127385262080.

The previous prime is 20281044447973. The next prime is 20281044448157. The reversal of 20281044448052 is 25084444018202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12109244667556 + 8171799780496 = 3479834^2 + 2858636^2 .

It is a super-2 number, since 2×20281044448052² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20281044447994 and 20281044448012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22289324 + ... + 23181372.

It is an arithmetic number, because the mean of its divisors is an integer number (1480742489275).

Almost surely, 2^{20281044448052} is an apocalyptic number.

It is an amenable number.

20281044448052 is a deficient number, since it is larger than the sum of its proper divisors (15256775294548).

20281044448052 is a wasteful number, since it uses less digits than its factorization.

20281044448052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899411 (or 899409 counting only the distinct ones).

The product of its (nonzero) digits is 655360, while the sum is 44.

The spelling of 20281044448052 in words is "twenty trillion, two hundred eighty-one billion, forty-four million, four hundred forty-eight thousand, fifty-two".