74171394221383 has 2 divisors, whose sum is σ = 74171394221384. Its totient is φ = 74171394221382.

The previous prime is 74171394221339. The next prime is 74171394221447. The reversal of 74171394221383 is 38312249317147.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74171394221383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74171394221083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37085697110691 + 37085697110692.

It is an arithmetic number, because the mean of its divisors is an integer number (37085697110692).

Almost surely, 2^{74171394221383} is an apocalyptic number.

74171394221383 is a deficient number, since it is larger than the sum of its proper divisors (1).

74171394221383 is an equidigital number, since it uses as much as digits as its factorization.

74171394221383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6096384, while the sum is 55.

The spelling of 74171394221383 in words is "seventy-four trillion, one hundred seventy-one billion, three hundred ninety-four million, two hundred twenty-one thousand, three hundred eighty-three".