2497812719809 has 9 divisors (see below), whose sum is σ = 2745548792931. Its totient is φ = 2270723031720.

The previous prime is 2497812719807. The next prime is 2497812719827. The reversal of 2497812719809 is 9089172187942.

The square root of 2497812719809 is 1580447.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2495309919025 + 2502800784 = 1579655^2 + 50028^2 .

It is not a de Polignac number, because 2497812719809 - 2¹ = 2497812719807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2497812719803) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17313079 + ... + 17456755.

Almost surely, 2^{2497812719809} is an apocalyptic number.

2497812719809 is the 1580447-th square number.

2497812719809 is the 790224-th centered octagonal number.

It is an amenable number.

2497812719809 is a deficient number, since it is larger than the sum of its proper divisors (247736073122).

2497812719809 is an frugal number, since it uses more digits than its factorization.

2497812719809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287376 (or 143688 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 67.

The spelling of 2497812719809 in words is "two trillion, four hundred ninety-seven billion, eight hundred twelve million, seven hundred nineteen thousand, eight hundred nine".