74391537696 has 192 divisors, whose sum is σ = 226146816000. Its totient is φ = 20973367296.

The previous prime is 74391537683. The next prime is 74391537697. The reversal of 74391537696 is 69673519347.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (74391537697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18146655 + ... + 18150753.

It is an arithmetic number, because the mean of its divisors is an integer number (1177848000).

Almost surely, 2^74391537696 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 74391537696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113073408000).

74391537696 is an abundant number, since it is smaller than the sum of its proper divisors (151755278304).

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

74391537696 is a wasteful number, since it uses less digits than its factorization.

74391537696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4471 (or 4463 counting only the distinct ones).

The product of its digits is 25719120, while the sum is 60.

The spelling of 74391537696 in words is "seventy-four billion, three hundred ninety-one million, five hundred thirty-seven thousand, six hundred ninety-six".