74528821606 has 4 divisors (see below), whose sum is σ = 111793232412. Its totient is φ = 37264410802.

The previous prime is 74528821603. The next prime is 74528821637. The reversal of 74528821606 is 60612882547.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 74528821606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74528821603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18632205400 + ... + 18632205403.

It is an arithmetic number, because the mean of its divisors is an integer number (27948308103).

Almost surely, 2^74528821606 is an apocalyptic number.

74528821606 is a deficient number, since it is larger than the sum of its proper divisors (37264410806).

74528821606 is a wasteful number, since it uses less digits than its factorization.

74528821606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37264410805.

The product of its (nonzero) digits is 1290240, while the sum is 49.

The spelling of 74528821606 in words is "seventy-four billion, five hundred twenty-eight million, eight hundred twenty-one thousand, six hundred six".