20320641452265 has 32 divisors (see below), whose sum is σ = 40535721133056. Its totient is φ = 8444941901760.

The previous prime is 20320641452263. The next prime is 20320641452299. The reversal of 20320641452265 is 56225414602302.

It is not a de Polignac number, because 20320641452265 - 2¹ = 20320641452263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20320641452263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8796813327 + ... + 8796815636.

It is an arithmetic number, because the mean of its divisors is an integer number (1266741285408).

Almost surely, 2^{20320641452265} is an apocalyptic number.

It is an amenable number.

20320641452265 is a deficient number, since it is larger than the sum of its proper divisors (20215079680791).

20320641452265 is a wasteful number, since it uses less digits than its factorization.

20320641452265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17593628989.

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 20320641452265 in words is "twenty trillion, three hundred twenty billion, six hundred forty-one million, four hundred fifty-two thousand, two hundred sixty-five".