613520117251 has 2 divisors, whose sum is σ = 613520117252. Its totient is φ = 613520117250.

The previous prime is 613520117173. The next prime is 613520117263. The reversal of 613520117251 is 152711025316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 613520117251 - 2⁹ = 613520116739 is a prime.

It is not a weakly prime, because it can be changed into another prime (613520117051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306760058625 + 306760058626.

It is an arithmetic number, because the mean of its divisors is an integer number (306760058626).

Almost surely, 2^613520117251 is an apocalyptic number.

613520117251 is a deficient number, since it is larger than the sum of its proper divisors (1).

613520117251 is an equidigital number, since it uses as much as digits as its factorization.

613520117251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 34.

The spelling of 613520117251 in words is "six hundred thirteen billion, five hundred twenty million, one hundred seventeen thousand, two hundred fifty-one".