74226782772 has 36 divisors (see below), whose sum is σ = 187687901856. Its totient is φ = 24734468880.

The previous prime is 74226782771. The next prime is 74226782779. The reversal of 74226782772 is 27728762247.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74226782771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208198 + ... + 437949.

Almost surely, 2^74226782772 is an apocalyptic number.

It is an amenable number.

74226782772 is an abundant number, since it is smaller than the sum of its proper divisors (113461119084).

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

74226782772 is a wasteful number, since it uses less digits than its factorization.

74226782772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649348 (or 649343 counting only the distinct ones).

The product of its digits is 7375872, while the sum is 54.

The spelling of 74226782772 in words is "seventy-four billion, two hundred twenty-six million, seven hundred eighty-two thousand, seven hundred seventy-two".