20492451105 has 128 divisors (see below), whose sum is σ = 40659148800. Its totient is φ = 8606889984.

The previous prime is 20492451097. The next prime is 20492451131. The reversal of 20492451105 is 50115429402.

It is not a de Polignac number, because 20492451105 - 2³ = 20492451097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 15897301 + ... + 15898589.

It is an arithmetic number, because the mean of its divisors is an integer number (317649600).

Almost surely, 2^20492451105 is an apocalyptic number.

It is an amenable number.

20492451105 is a deficient number, since it is larger than the sum of its proper divisors (20166697695).

20492451105 is a wasteful number, since it uses less digits than its factorization.

20492451105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583.

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 20492451105 in words is "twenty billion, four hundred ninety-two million, four hundred fifty-one thousand, one hundred five".