74350734581749 has 2 divisors, whose sum is σ = 74350734581750. Its totient is φ = 74350734581748.

The previous prime is 74350734581741. The next prime is 74350734581797. The reversal of 74350734581749 is 94718543705347.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72753905568100 + 1596829013649 = 8529590^2 + 1263657^2 .

It is a cyclic number.

It is not a de Polignac number, because 74350734581749 - 2³ = 74350734581741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74350734581741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37175367290874 + 37175367290875.

It is an arithmetic number, because the mean of its divisors is an integer number (37175367290875).

Almost surely, 2^{74350734581749} is an apocalyptic number.

It is an amenable number.

74350734581749 is a deficient number, since it is larger than the sum of its proper divisors (1).

74350734581749 is an equidigital number, since it uses as much as digits as its factorization.

74350734581749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 355622400, while the sum is 67.

The spelling of 74350734581749 in words is "seventy-four trillion, three hundred fifty billion, seven hundred thirty-four million, five hundred eighty-one thousand, seven hundred forty-nine".