20445945125206 has 8 divisors (see below), whose sum is σ = 30791104611624. Its totient is φ = 10182243588000.

The previous prime is 20445945125147. The next prime is 20445945125231. The reversal of 20445945125206 is 60252154954402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20445945125206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20364486675 + ... + 20364487678.

It is an arithmetic number, because the mean of its divisors is an integer number (3848888076453).

Almost surely, 2^{20445945125206} is an apocalyptic number.

20445945125206 is a deficient number, since it is larger than the sum of its proper divisors (10345159486418).

20445945125206 is a wasteful number, since it uses less digits than its factorization.

20445945125206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40728974606.

The product of its (nonzero) digits is 3456000, while the sum is 49.

The spelling of 20445945125206 in words is "twenty trillion, four hundred forty-five billion, nine hundred forty-five million, one hundred twenty-five thousand, two hundred six".