20245392906 has 16 divisors (see below), whose sum is σ = 40493126784. Its totient is φ = 6748074144.

The previous prime is 20245392901. The next prime is 20245392917. The reversal of 20245392906 is 60929354202.

It is not an unprimeable number, because it can be changed into a prime (20245392901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27150 + ... + 203046.

It is an arithmetic number, because the mean of its divisors is an integer number (2530820424).

Almost surely, 2^20245392906 is an apocalyptic number.

20245392906 is an abundant number, since it is smaller than the sum of its proper divisors (20247733878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20245392906 is a wasteful number, since it uses less digits than its factorization.

20245392906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195085.

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 20245392906 in words is "twenty billion, two hundred forty-five million, three hundred ninety-two thousand, nine hundred six".