74644885441 has 6 divisors (see below), whose sum is σ = 86831805570. Its totient is φ = 63981330336.

The previous prime is 74644885429. The next prime is 74644885457. The reversal of 74644885441 is 14458844647.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 74605459600 + 39425841 = 273140^2 + 6279^2 .

It is not a de Polignac number, because 74644885441 - 2⁵ = 74644885409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74644885411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 761682456 + ... + 761682553.

It is an arithmetic number, because the mean of its divisors is an integer number (14471967595).

Almost surely, 2^74644885441 is an apocalyptic number.

It is an amenable number.

74644885441 is a deficient number, since it is larger than the sum of its proper divisors (12186920129).

74644885441 is a wasteful number, since it uses less digits than its factorization.

74644885441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523365023 (or 1523365016 counting only the distinct ones).

The product of its digits is 13762560, while the sum is 55.

The spelling of 74644885441 in words is "seventy-four billion, six hundred forty-four million, eight hundred eighty-five thousand, four hundred forty-one".