20492201918558 has 32 divisors (see below), whose sum is σ = 32521200983040. Its totient is φ = 9657358254720.

The previous prime is 20492201918557. The next prime is 20492201918563. The reversal of 20492201918558 is 85581910229402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20492201918557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13044038 + ... + 14530358.

It is an arithmetic number, because the mean of its divisors is an integer number (1016287530720).

Almost surely, 2^{20492201918558} is an apocalyptic number.

20492201918558 is a deficient number, since it is larger than the sum of its proper divisors (12028999064482).

20492201918558 is a wasteful number, since it uses less digits than its factorization.

20492201918558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488192.

The product of its (nonzero) digits is 4147200, while the sum is 56.

The spelling of 20492201918558 in words is "twenty trillion, four hundred ninety-two billion, two hundred one million, nine hundred eighteen thousand, five hundred fifty-eight".