74227512389 has 2 divisors, whose sum is σ = 74227512390. Its totient is φ = 74227512388.

The previous prime is 74227512361. The next prime is 74227512449. The reversal of 74227512389 is 98321572247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37969640164 + 36257872225 = 194858^2 + 190415^2 .

It is a cyclic number.

It is not a de Polignac number, because 74227512389 - 2¹² = 74227508293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74227515389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37113756194 + 37113756195.

It is an arithmetic number, because the mean of its divisors is an integer number (37113756195).

Almost surely, 2^74227512389 is an apocalyptic number.

It is an amenable number.

74227512389 is a deficient number, since it is larger than the sum of its proper divisors (1).

74227512389 is an equidigital number, since it uses as much as digits as its factorization.

74227512389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 50.

The spelling of 74227512389 in words is "seventy-four billion, two hundred twenty-seven million, five hundred twelve thousand, three hundred eighty-nine".