2521709264 has 20 divisors (see below), whose sum is σ = 5004979140. Its totient is φ = 1230101760.

The previous prime is 2521709261. The next prime is 2521709273. The reversal of 2521709264 is 4629071252.

It can be written as a sum of positive squares in 2 ways, for example, as 150798400 + 2370910864 = 12280^2 + 48692^2 .

It is a super-2 number, since 2×2521709264² = 12718035224286843392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521709261) 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, 1921379 + ... + 1922690.

It is an arithmetic number, because the mean of its divisors is an integer number (250248957).

Almost surely, 2^2521709264 is an apocalyptic number.

It is an amenable number.

2521709264 is a deficient number, since it is larger than the sum of its proper divisors (2483269876).

2521709264 is a wasteful number, since it uses less digits than its factorization.

2521709264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3844118 (or 3844112 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 2521709264 is about 50216.6233830989. The cubic root of 2521709264 is about 1361.1260253398.

The spelling of 2521709264 in words is "two billion, five hundred twenty-one million, seven hundred nine thousand, two hundred sixty-four".