74410784785081 has 2 divisors, whose sum is σ = 74410784785082. Its totient is φ = 74410784785080.

The previous prime is 74410784785049. The next prime is 74410784785087. The reversal of 74410784785081 is 18058748701447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69486561939600 + 4924222845481 = 8335860^2 + 2219059^2 .

It is a cyclic number.

It is not a de Polignac number, because 74410784785081 - 2⁵ = 74410784785049 is a prime.

It is a super-2 number, since 2×74410784785081² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74410784785087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37205392392540 + 37205392392541.

It is an arithmetic number, because the mean of its divisors is an integer number (37205392392541).

Almost surely, 2^{74410784785081} is an apocalyptic number.

It is an amenable number.

74410784785081 is a deficient number, since it is larger than the sum of its proper divisors (1).

74410784785081 is an equidigital number, since it uses as much as digits as its factorization.

74410784785081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56197120, while the sum is 64.

The spelling of 74410784785081 in words is "seventy-four trillion, four hundred ten billion, seven hundred eighty-four million, seven hundred eighty-five thousand, eighty-one".