74145234871 has 2 divisors, whose sum is σ = 74145234872. Its totient is φ = 74145234870.

The previous prime is 74145234859. The next prime is 74145234949. The reversal of 74145234871 is 17843254147.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74145234871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74145234271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37072617435 + 37072617436.

It is an arithmetic number, because the mean of its divisors is an integer number (37072617436).

Almost surely, 2^74145234871 is an apocalyptic number.

74145234871 is a deficient number, since it is larger than the sum of its proper divisors (1).

74145234871 is an equidigital number, since it uses as much as digits as its factorization.

74145234871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 752640, while the sum is 46.

The spelling of 74145234871 in words is "seventy-four billion, one hundred forty-five million, two hundred thirty-four thousand, eight hundred seventy-one".