74661229439 has 2 divisors, whose sum is σ = 74661229440. Its totient is φ = 74661229438.

The previous prime is 74661229417. The next prime is 74661229463. The reversal of 74661229439 is 93492216647.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74661229439 - 2¹² = 74661225343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74661226439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37330614719 + 37330614720.

It is an arithmetic number, because the mean of its divisors is an integer number (37330614720).

Almost surely, 2^74661229439 is an apocalyptic number.

74661229439 is a deficient number, since it is larger than the sum of its proper divisors (1).

74661229439 is an equidigital number, since it uses as much as digits as its factorization.

74661229439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 53.

The spelling of 74661229439 in words is "seventy-four billion, six hundred sixty-one million, two hundred twenty-nine thousand, four hundred thirty-nine".