826917625613 has 4 divisors (see below), whose sum is σ = 826982246400. Its totient is φ = 826853004828.

The previous prime is 826917625609. The next prime is 826917625661. The reversal of 826917625613 is 316526719628.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 826917625613 - 2² = 826917625609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (826917625693) 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, 32291195 + ... + 32316792.

It is an arithmetic number, because the mean of its divisors is an integer number (206745561600).

Almost surely, 2^826917625613 is an apocalyptic number.

It is an amenable number.

826917625613 is a deficient number, since it is larger than the sum of its proper divisors (64620787).

826917625613 is a wasteful number, since it uses less digits than its factorization.

826917625613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64620786.

The product of its digits is 6531840, while the sum is 56.

The spelling of 826917625613 in words is "eight hundred twenty-six billion, nine hundred seventeen million, six hundred twenty-five thousand, six hundred thirteen".