74726740688 has 40 divisors (see below), whose sum is σ = 152551396800. Its totient is φ = 35362462464.

The previous prime is 74726740687. The next prime is 74726740723. The reversal of 74726740688 is 88604762747.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74726740687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195053 + ... + 433011.

It is an arithmetic number, because the mean of its divisors is an integer number (3813784920).

Almost surely, 2^74726740688 is an apocalyptic number.

It is an amenable number.

74726740688 is an abundant number, since it is smaller than the sum of its proper divisors (77824656112).

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

74726740688 is a wasteful number, since it uses less digits than its factorization.

74726740688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239019 (or 239013 counting only the distinct ones).

The product of its (nonzero) digits is 25288704, while the sum is 59.

The spelling of 74726740688 in words is "seventy-four billion, seven hundred twenty-six million, seven hundred forty thousand, six hundred eighty-eight".