20445080311 has 16 divisors (see below), whose sum is σ = 22021269120. Its totient is φ = 18910932480.

The previous prime is 20445080251. The next prime is 20445080329. The reversal of 20445080311 is 11308054402.

It is a cyclic number.

It is not a de Polignac number, because 20445080311 - 2³³ = 11855145719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20445080311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20445080111) 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, 1316530 + ... + 1331968.

It is an arithmetic number, because the mean of its divisors is an integer number (1376329320).

Almost surely, 2^20445080311 is an apocalyptic number.

20445080311 is a deficient number, since it is larger than the sum of its proper divisors (1576188809).

20445080311 is a wasteful number, since it uses less digits than its factorization.

20445080311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16794.

The product of its (nonzero) digits is 3840, while the sum is 28.

The spelling of 20445080311 in words is "twenty billion, four hundred forty-five million, eighty thousand, three hundred eleven".