74856642484 has 12 divisors (see below), whose sum is σ = 141075980164. Its totient is φ = 34549219584.

The previous prime is 74856642481. The next prime is 74856642551. The reversal of 74856642484 is 48424665847.

It can be written as a sum of positive squares in 2 ways, for example, as 3525984400 + 71330658084 = 59380^2 + 267078^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74856642481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719775357 + ... + 719775460.

Almost surely, 2^74856642484 is an apocalyptic number.

It is an amenable number.

74856642484 is a deficient number, since it is larger than the sum of its proper divisors (66219337680).

74856642484 is a wasteful number, since it uses less digits than its factorization.

74856642484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439550834 (or 1439550832 counting only the distinct ones).

The product of its digits is 41287680, while the sum is 58.

The spelling of 74856642484 in words is "seventy-four billion, eight hundred fifty-six million, six hundred forty-two thousand, four hundred eighty-four".