74217071712 has 96 divisors (see below), whose sum is σ = 222935715072. Its totient is φ = 21177782784.

The previous prime is 74217071653. The next prime is 74217071729. The reversal of 74217071712 is 21717071247.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×74217071712² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458698 + ... + 599030.

It is an arithmetic number, because the mean of its divisors is an integer number (2322247032).

Almost surely, 2^74217071712 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 74217071712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111467857536).

74217071712 is an abundant number, since it is smaller than the sum of its proper divisors (148718643360).

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

74217071712 is a wasteful number, since it uses less digits than its factorization.

74217071712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141140 (or 141132 counting only the distinct ones).

The product of its (nonzero) digits is 38416, while the sum is 39.

The spelling of 74217071712 in words is "seventy-four billion, two hundred seventeen million, seventy-one thousand, seven hundred twelve".