20659890889552 has 20 divisors (see below), whose sum is σ = 40218247318816. Its totient is φ = 10280988355680.

The previous prime is 20659890889549. The next prime is 20659890889567. The reversal of 20659890889552 is 25598809895602.

It is a congruent number.

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, 3059814588 + ... + 3059821339.

Almost surely, 2^{20659890889552} is an apocalyptic number.

It is an amenable number.

20659890889552 is a deficient number, since it is larger than the sum of its proper divisors (19558356429264).

20659890889552 is a wasteful number, since it uses less digits than its factorization.

20659890889552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6119636146 (or 6119636140 counting only the distinct ones).

The product of its (nonzero) digits is 1119744000, while the sum is 76.

The spelling of 20659890889552 in words is "twenty trillion, six hundred fifty-nine billion, eight hundred ninety million, eight hundred eighty-nine thousand, five hundred fifty-two".