61274208019 has 2 divisors, whose sum is σ = 61274208020. Its totient is φ = 61274208018.

The previous prime is 61274208001. The next prime is 61274208053. The reversal of 61274208019 is 91080247216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61274208019 - 2⁵ = 61274207987 is a prime.

It is a super-2 number, since 2×61274208019² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61274208089) 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, 30637104009 + 30637104010.

It is an arithmetic number, because the mean of its divisors is an integer number (30637104010).

Almost surely, 2^61274208019 is an apocalyptic number.

61274208019 is a deficient number, since it is larger than the sum of its proper divisors (1).

61274208019 is an equidigital number, since it uses as much as digits as its factorization.

61274208019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 61274208019 in words is "sixty-one billion, two hundred seventy-four million, two hundred eight thousand, nineteen".