20045245253201 has 16 divisors (see below), whose sum is σ = 22943452733568. Its totient is φ = 17155690358400.

The previous prime is 20045245253141. The next prime is 20045245253203. The reversal of 20045245253201 is 10235254254002.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20045245253201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20045245253203) 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, 118680431 + ... + 118849211.

It is an arithmetic number, because the mean of its divisors is an integer number (1433965795848).

Almost surely, 2^{20045245253201} is an apocalyptic number.

It is an amenable number.

20045245253201 is a deficient number, since it is larger than the sum of its proper divisors (2898207480367).

20045245253201 is a wasteful number, since it uses less digits than its factorization.

20045245253201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194312.

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 20045245253201 in words is "twenty trillion, forty-five billion, two hundred forty-five million, two hundred fifty-three thousand, two hundred one".