74871068191 has 2 divisors, whose sum is σ = 74871068192. Its totient is φ = 74871068190.

The previous prime is 74871068189. The next prime is 74871068201. The reversal of 74871068191 is 19186017847.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74871068191 - 2¹ = 74871068189 is a prime.

It is a super-2 number, since 2×74871068191² (a number of 23 digits) contains 22 as substring.

Together with 74871068189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74871068791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37435534095 + 37435534096.

It is an arithmetic number, because the mean of its divisors is an integer number (37435534096).

Almost surely, 2^74871068191 is an apocalyptic number.

74871068191 is a deficient number, since it is larger than the sum of its proper divisors (1).

74871068191 is an equidigital number, since it uses as much as digits as its factorization.

74871068191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 52.

The spelling of 74871068191 in words is "seventy-four billion, eight hundred seventy-one million, sixty-eight thousand, one hundred ninety-one".