74423914447 has 2 divisors, whose sum is σ = 74423914448. Its totient is φ = 74423914446.

The previous prime is 74423914429. The next prime is 74423914459. The reversal of 74423914447 is 74441932447.

It is a strong prime.

It is an emirp because it is prime and its reverse (74441932447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74423914447 - 2²³ = 74415525839 is a prime.

It is a super-2 number, since 2×74423914447² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74423914447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74423914247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37211957223 + 37211957224.

It is an arithmetic number, because the mean of its divisors is an integer number (37211957224).

Almost surely, 2^74423914447 is an apocalyptic number.

74423914447 is a deficient number, since it is larger than the sum of its proper divisors (1).

74423914447 is an equidigital number, since it uses as much as digits as its factorization.

74423914447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 49.

The spelling of 74423914447 in words is "seventy-four billion, four hundred twenty-three million, nine hundred fourteen thousand, four hundred forty-seven".