74726712018 has 96 divisors (see below), whose sum is σ = 186369206400. Its totient is φ = 21197127168.

The previous prime is 74726711977. The next prime is 74726712023. The reversal of 74726712018 is 81021762747.

It is a super-2 number, since 2×74726712018² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35098378 + ... + 35100506.

It is an arithmetic number, because the mean of its divisors is an integer number (1941345900).

Almost surely, 2^74726712018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74726712018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93184603200).

74726712018 is an abundant number, since it is smaller than the sum of its proper divisors (111642494382).

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

74726712018 is a wasteful number, since it uses less digits than its factorization.

74726712018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4016 (or 4013 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The spelling of 74726712018 in words is "seventy-four billion, seven hundred twenty-six million, seven hundred twelve thousand, eighteen".