20245067866660 has 72 divisors (see below), whose sum is σ = 53260101651960. Its totient is φ = 6407230265856.

The previous prime is 20245067866627. The next prime is 20245067866663. The reversal of 20245067866660 is 6666876054202.

It can be written as a sum of positive squares in 4 ways, for example, as 871355039296 + 19373712827364 = 933464^2 + 4401558^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20245067866595 and 20245067866604.

It is not an unprimeable number, because it can be changed into a prime (20245067866663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 794534665 + ... + 794560144.

It is an arithmetic number, because the mean of its divisors is an integer number (739723634055).

Almost surely, 2^{20245067866660} is an apocalyptic number.

20245067866660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20245067866660 is an abundant number, since it is smaller than the sum of its proper divisors (33015033785300).

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

20245067866660 is a wasteful number, since it uses less digits than its factorization.

20245067866660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589094845 (or 1589094836 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 58.

The spelling of 20245067866660 in words is "twenty trillion, two hundred forty-five billion, sixty-seven million, eight hundred sixty-six thousand, six hundred sixty".