74136786432 has 80 divisors (see below), whose sum is σ = 207900116160. Its totient is φ = 23411607552.

The previous prime is 74136786431. The next prime is 74136786481. The reversal of 74136786432 is 23468763147.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74136786431) 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 7 ways as a sum of consecutive naturals, for example, 1240978 + ... + 1299345.

It is an arithmetic number, because the mean of its divisors is an integer number (2598751452).

Almost surely, 2^74136786432 is an apocalyptic number.

It is an amenable number.

74136786432 is an abundant number, since it is smaller than the sum of its proper divisors (133763329728).

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

74136786432 is a wasteful number, since it uses less digits than its factorization.

74136786432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540363 (or 2540347 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 51.

The spelling of 74136786432 in words is "seventy-four billion, one hundred thirty-six million, seven hundred eighty-six thousand, four hundred thirty-two".