2497717893889 has 3 divisors (see below), whose sum is σ = 2497719474307. Its totient is φ = 2497716313472.

The previous prime is 2497717893863. The next prime is 2497717893901. The reversal of 2497717893889 is 9883987177942.

The square root of 2497717893889 is 1580417.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1895839841025 + 601878052864 = 1376895^2 + 775808^2 .

It is not a de Polignac number, because 2497717893889 - 2⁵ = 2497717893857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2497717899889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 790209 + ... + 2370625.

Almost surely, 2^{2497717893889} is an apocalyptic number.

2497717893889 is the 1580417-th square number.

2497717893889 is the 790209-th centered octagonal number.

It is an amenable number.

2497717893889 is a deficient number, since it is larger than the sum of its proper divisors (1580418).

2497717893889 is an frugal number, since it uses more digits than its factorization.

2497717893889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160834 (or 1580417 counting only the distinct ones).

The product of its digits is 3072577536, while the sum is 82.

The spelling of 2497717893889 in words is "two trillion, four hundred ninety-seven billion, seven hundred seventeen million, eight hundred ninety-three thousand, eight hundred eighty-nine".