20559146392 has 16 divisors (see below), whose sum is σ = 38825728200. Its totient is φ = 10205618880.

The previous prime is 20559146383. The next prime is 20559146393. The reversal of 20559146392 is 29364195502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20559146393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9243109 + ... + 9245332.

Almost surely, 2^20559146392 is an apocalyptic number.

It is an amenable number.

20559146392 is a deficient number, since it is larger than the sum of its proper divisors (18266581808).

20559146392 is a wasteful number, since it uses less digits than its factorization.

20559146392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18488586 (or 18488582 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 20559146392 in words is "twenty billion, five hundred fifty-nine million, one hundred forty-six thousand, three hundred ninety-two".