20445206862260 has 48 divisors (see below), whose sum is σ = 42975540824832. Its totient is φ = 8170349980800.

The previous prime is 20445206862253. The next prime is 20445206862263. The reversal of 20445206862260 is 6226860254402.

It is a super-2 number, since 2×20445206862260² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20445206862263) 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, 199198355 + ... + 199300965.

It is an arithmetic number, because the mean of its divisors is an integer number (895323767184).

Almost surely, 2^{20445206862260} is an apocalyptic number.

20445206862260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20445206862260 is an abundant number, since it is smaller than the sum of its proper divisors (22530333962572).

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

20445206862260 is a wasteful number, since it uses less digits than its factorization.

20445206862260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111944 (or 111942 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 47.

The spelling of 20445206862260 in words is "twenty trillion, four hundred forty-five billion, two hundred six million, eight hundred sixty-two thousand, two hundred sixty".