74419805281 has 2 divisors, whose sum is σ = 74419805282. Its totient is φ = 74419805280.

The previous prime is 74419805221. The next prime is 74419805297. The reversal of 74419805281 is 18250891447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38259360000 + 36160445281 = 195600^2 + 190159^2 .

It is an emirp because it is prime and its reverse (18250891447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74419805281 - 2⁷ = 74419805153 is a prime.

It is a super-2 number, since 2×74419805281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74419805221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37209902640 + 37209902641.

It is an arithmetic number, because the mean of its divisors is an integer number (37209902641).

Almost surely, 2^74419805281 is an apocalyptic number.

It is an amenable number.

74419805281 is a deficient number, since it is larger than the sum of its proper divisors (1).

74419805281 is an equidigital number, since it uses as much as digits as its factorization.

74419805281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 74419805281 in words is "seventy-four billion, four hundred nineteen million, eight hundred five thousand, two hundred eighty-one".