2573763665 has 16 divisors (see below), whose sum is σ = 3380287680. Its totient is φ = 1865718720.

The previous prime is 2573763653. The next prime is 2573763719. The reversal of 2573763665 is 5663673752.

It is not a de Polignac number, because 2573763665 - 2⁴ = 2573763649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59330 + ... + 93099.

It is an arithmetic number, because the mean of its divisors is an integer number (211267980).

Almost surely, 2^2573763665 is an apocalyptic number.

It is an amenable number.

2573763665 is a deficient number, since it is larger than the sum of its proper divisors (806524015).

2573763665 is a wasteful number, since it uses less digits than its factorization.

2573763665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152752.

The product of its digits is 4762800, while the sum is 50.

The square root of 2573763665 is about 50732.2743921461. The cubic root of 2573763665 is about 1370.4279951076.

The spelling of 2573763665 in words is "two billion, five hundred seventy-three million, seven hundred sixty-three thousand, six hundred sixty-five".