74456023909 has 4 divisors (see below), whose sum is σ = 75475969516. Its totient is φ = 73436078304.

The previous prime is 74456023891. The next prime is 74456023933. The reversal of 74456023909 is 90932065447.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90932065447 = 389 ⋅233758523.

It can be written as a sum of positive squares in 2 ways, for example, as 60353748900 + 14102275009 = 245670^2 + 118753^2 .

It is a cyclic number.

It is not a de Polignac number, because 74456023909 - 2⁷ = 74456023781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74456023969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509972694 + ... + 509972839.

It is an arithmetic number, because the mean of its divisors is an integer number (18868992379).

Almost surely, 2^74456023909 is an apocalyptic number.

It is an amenable number.

74456023909 is a deficient number, since it is larger than the sum of its proper divisors (1019945607).

74456023909 is a wasteful number, since it uses less digits than its factorization.

74456023909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019945606.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 74456023909 in words is "seventy-four billion, four hundred fifty-six million, twenty-three thousand, nine hundred nine".