20655458492 has 6 divisors (see below), whose sum is σ = 36147052368. Its totient is φ = 10327729244.

The previous prime is 20655458491. The next prime is 20655458501. The reversal of 20655458492 is 29485455602.

It is a self number, because there is not a number n which added to its sum of digits gives 20655458492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20655458491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2581932308 + ... + 2581932315.

It is an arithmetic number, because the mean of its divisors is an integer number (6024508728).

Almost surely, 2^20655458492 is an apocalyptic number.

It is an amenable number.

20655458492 is a deficient number, since it is larger than the sum of its proper divisors (15491593876).

20655458492 is a wasteful number, since it uses less digits than its factorization.

20655458492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5163864627 (or 5163864625 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 50.

The spelling of 20655458492 in words is "twenty billion, six hundred fifty-five million, four hundred fifty-eight thousand, four hundred ninety-two".