74947371427 has 2 divisors, whose sum is σ = 74947371428. Its totient is φ = 74947371426.

The previous prime is 74947371407. The next prime is 74947371431. The reversal of 74947371427 is 72417374947.

It is a strong prime.

It is an emirp because it is prime and its reverse (72417374947) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74947371427 is a prime.

It is not a weakly prime, because it can be changed into another prime (74947371407) 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, 37473685713 + 37473685714.

It is an arithmetic number, because the mean of its divisors is an integer number (37473685714).

Almost surely, 2^74947371427 is an apocalyptic number.

74947371427 is a deficient number, since it is larger than the sum of its proper divisors (1).

74947371427 is an equidigital number, since it uses as much as digits as its factorization.

74947371427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8297856, while the sum is 55.

The spelling of 74947371427 in words is "seventy-four billion, nine hundred forty-seven million, three hundred seventy-one thousand, four hundred twenty-seven".