613646614221493 has 2 divisors, whose sum is σ = 613646614221494. Its totient is φ = 613646614221492.

The previous prime is 613646614221467. The next prime is 613646614221523. The reversal of 613646614221493 is 394122416646316.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600648043966884 + 12998570254609 = 24508122^2 + 3605353^2 .

It is a cyclic number.

It is not a de Polignac number, because 613646614221493 - 2²⁵ = 613646580667061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613646614221413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306823307110746 + 306823307110747.

It is an arithmetic number, because the mean of its divisors is an integer number (306823307110747).

Almost surely, 2^{613646614221493} is an apocalyptic number.

It is an amenable number.

613646614221493 is a deficient number, since it is larger than the sum of its proper divisors (1).

613646614221493 is an equidigital number, since it uses as much as digits as its factorization.

613646614221493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26873856, while the sum is 58.

The spelling of 613646614221493 in words is "six hundred thirteen trillion, six hundred forty-six billion, six hundred fourteen million, two hundred twenty-one thousand, four hundred ninety-three".