74551445136 has 240 divisors, whose sum is σ = 244361145600. Its totient is φ = 21208642560.

The previous prime is 74551445119. The next prime is 74551445161. The reversal of 74551445136 is 63154415547.

It is a happy number.

74551445136 is a `hidden beast` number, since 7 + 4 + 551 + 44 + 51 + 3 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 74551445091 and 74551445100.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 11900341 + ... + 11906603.

It is an arithmetic number, because the mean of its divisors is an integer number (1018171440).

Almost surely, 2^74551445136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74551445136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122180572800).

74551445136 is an abundant number, since it is smaller than the sum of its proper divisors (169809700464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74551445136 is a wasteful number, since it uses less digits than its factorization.

74551445136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6539 (or 6516 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The spelling of 74551445136 in words is "seventy-four billion, five hundred fifty-one million, four hundred forty-five thousand, one hundred thirty-six".