74593255981 has 2 divisors, whose sum is σ = 74593255982. Its totient is φ = 74593255980.

The previous prime is 74593255963. The next prime is 74593255999. The reversal of 74593255981 is 18955239547.

It is a balanced prime because it is at equal distance from previous prime (74593255963) and next prime (74593255999).

It can be written as a sum of positive squares in only one way, i.e., 65668675081 + 8924580900 = 256259^2 + 94470^2 .

It is a cyclic number.

It is not a de Polignac number, because 74593255981 - 2⁷ = 74593255853 is a prime.

It is a super-2 number, since 2×74593255981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74593955981) 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, 37296627990 + 37296627991.

It is an arithmetic number, because the mean of its divisors is an integer number (37296627991).

Almost surely, 2^74593255981 is an apocalyptic number.

It is an amenable number.

74593255981 is a deficient number, since it is larger than the sum of its proper divisors (1).

74593255981 is an equidigital number, since it uses as much as digits as its factorization.

74593255981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608000, while the sum is 58.

The spelling of 74593255981 in words is "seventy-four billion, five hundred ninety-three million, two hundred fifty-five thousand, nine hundred eighty-one".