74325367981 has 4 divisors (see below), whose sum is σ = 74333764764. Its totient is φ = 74316971200.

The previous prime is 74325367937. The next prime is 74325368011. The reversal of 74325367981 is 18976352347.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65275651081 + 9049716900 = 255491^2 + 95130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74325367981 is a prime.

It is a super-2 number, since 2×74325367981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74325362981) 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 in 3 ways as a sum of consecutive naturals, for example, 4185100 + ... + 4202821.

It is an arithmetic number, because the mean of its divisors is an integer number (18583441191).

Almost surely, 2^74325367981 is an apocalyptic number.

It is an amenable number.

74325367981 is a deficient number, since it is larger than the sum of its proper divisors (8396783).

74325367981 is an equidigital number, since it uses as much as digits as its factorization.

74325367981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8396782.

The product of its digits is 7620480, while the sum is 55.

The spelling of 74325367981 in words is "seventy-four billion, three hundred twenty-five million, three hundred sixty-seven thousand, nine hundred eighty-one".