74777727628 has 24 divisors (see below), whose sum is σ = 135623814480. Its totient is φ = 36032834880.

The previous prime is 74777727623. The next prime is 74777727707. The reversal of 74777727628 is 82672777747.

It is a self number, because there is not a number n which added to its sum of digits gives 74777727628.

It is not an unprimeable number, because it can be changed into a prime (74777727623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 533026 + ... + 658537.

It is an arithmetic number, because the mean of its divisors is an integer number (5650992270).

Almost surely, 2^74777727628 is an apocalyptic number.

It is an amenable number.

74777727628 is a deficient number, since it is larger than the sum of its proper divisors (60846086852).

74777727628 is a wasteful number, since it uses less digits than its factorization.

74777727628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192137 (or 1192135 counting only the distinct ones).

The product of its digits is 90354432, while the sum is 64.

The spelling of 74777727628 in words is "seventy-four billion, seven hundred seventy-seven million, seven hundred twenty-seven thousand, six hundred twenty-eight".