2445566781137 has 4 divisors (see below), whose sum is σ = 2448635247156. Its totient is φ = 2442498315120.

The previous prime is 2445566781113. The next prime is 2445566781179. The reversal of 2445566781137 is 7311876655442.

It is a happy number.

2445566781137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1102665906241 + 1342900874896 = 1050079^2 + 1158836^2 .

It is a cyclic number.

It is not a de Polignac number, because 2445566781137 - 2¹⁰ = 2445566780113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2445566784137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1534231814 + ... + 1534233407.

It is an arithmetic number, because the mean of its divisors is an integer number (612158811789).

Almost surely, 2^{2445566781137} is an apocalyptic number.

It is an amenable number.

2445566781137 is a deficient number, since it is larger than the sum of its proper divisors (3068466019).

2445566781137 is an equidigital number, since it uses as much as digits as its factorization.

2445566781137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068466018.

The product of its digits is 33868800, while the sum is 59.

The spelling of 2445566781137 in words is "two trillion, four hundred forty-five billion, five hundred sixty-six million, seven hundred eighty-one thousand, one hundred thirty-seven".