7935256513 has 8 divisors (see below), whose sum is σ = 8105783400. Its totient is φ = 7765500288.

The previous prime is 7935256499. The next prime is 7935256523. The reversal of 7935256513 is 3156525397.

It can be written as a sum of positive squares in 4 ways, for example, as 765739584 + 7169516929 = 27672^2 + 84673^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7935256513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7935256523) 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 7 ways as a sum of consecutive naturals, for example, 171828 + ... + 213061.

It is an arithmetic number, because the mean of its divisors is an integer number (1013222925).

Almost surely, 2^7935256513 is an apocalyptic number.

It is an amenable number.

7935256513 is a deficient number, since it is larger than the sum of its proper divisors (170526887).

7935256513 is a wasteful number, since it uses less digits than its factorization.

7935256513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385331.

The product of its digits is 850500, while the sum is 46.

The square root of 7935256513 is about 89080.0567635652. The cubic root of 7935256513 is about 1994.5900890428.

The spelling of 7935256513 in words is "seven billion, nine hundred thirty-five million, two hundred fifty-six thousand, five hundred thirteen".