613927128401 has 2 divisors, whose sum is σ = 613927128402. Its totient is φ = 613927128400.

The previous prime is 613927128349. The next prime is 613927128461. The reversal of 613927128401 is 104821729316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 481157259025 + 132769869376 = 693655^2 + 364376^2 .

It is a cyclic number.

It is not a de Polignac number, because 613927128401 - 2¹⁸ = 613926866257 is a prime.

It is not a weakly prime, because it can be changed into another prime (613927128461) 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 as a sum of consecutive naturals, namely, 306963564200 + 306963564201.

It is an arithmetic number, because the mean of its divisors is an integer number (306963564201).

Almost surely, 2^613927128401 is an apocalyptic number.

It is an amenable number.

613927128401 is a deficient number, since it is larger than the sum of its proper divisors (1).

613927128401 is an equidigital number, since it uses as much as digits as its factorization.

613927128401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 613927128401 in words is "six hundred thirteen billion, nine hundred twenty-seven million, one hundred twenty-eight thousand, four hundred one".