74518703712 has 144 divisors (see below), whose sum is σ = 218989854720. Its totient is φ = 24011769600.

The previous prime is 74518703617. The next prime is 74518703731. The reversal of 74518703712 is 21730781547.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9093537 + ... + 9101727.

It is an arithmetic number, because the mean of its divisors is an integer number (1520762880).

Almost surely, 2^74518703712 is an apocalyptic number.

74518703712 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74518703712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109494927360).

74518703712 is an abundant number, since it is smaller than the sum of its proper divisors (144471151008).

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

74518703712 is a wasteful number, since it uses less digits than its factorization.

74518703712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9257 (or 9246 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The spelling of 74518703712 in words is "seventy-four billion, five hundred eighteen million, seven hundred three thousand, seven hundred twelve".