20641344452 has 12 divisors (see below), whose sum is σ = 36127407120. Its totient is φ = 10319228136.

The previous prime is 20641344443. The next prime is 20641344473. The reversal of 20641344452 is 25444314602.

It is a super-2 number, since 2×20641344452² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328538 + ... + 386289.

It is an arithmetic number, because the mean of its divisors is an integer number (3010617260).

Almost surely, 2^20641344452 is an apocalyptic number.

It is an amenable number.

20641344452 is a deficient number, since it is larger than the sum of its proper divisors (15486062668).

20641344452 is a wasteful number, since it uses less digits than its factorization.

20641344452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722050 (or 722048 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

The spelling of 20641344452 in words is "twenty billion, six hundred forty-one million, three hundred forty-four thousand, four hundred fifty-two".