74555641485 has 64 divisors (see below), whose sum is σ = 143079471360. Its totient is φ = 36616769280.

The previous prime is 74555641471. The next prime is 74555641487. The reversal of 74555641485 is 58414655547.

74555641485 is a `hidden beast` number, since 7 + 4 + 5 + 556 + 4 + 1 + 4 + 85 = 666.

It is not a de Polignac number, because 74555641485 - 2⁵ = 74555641453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74555641487) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 688402 + ... + 789308.

It is an arithmetic number, because the mean of its divisors is an integer number (2235616740).

Almost surely, 2^74555641485 is an apocalyptic number.

It is an amenable number.

74555641485 is a deficient number, since it is larger than the sum of its proper divisors (68523829875).

74555641485 is a wasteful number, since it uses less digits than its factorization.

74555641485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101355 (or 101349 counting only the distinct ones).

The product of its digits is 13440000, while the sum is 54.

The spelling of 74555641485 in words is "seventy-four billion, five hundred fifty-five million, six hundred forty-one thousand, four hundred eighty-five".