71574053512 has 64 divisors (see below), whose sum is σ = 152187739200. Its totient is φ = 31283884800.

The previous prime is 71574053491. The next prime is 71574053513. The reversal of 71574053512 is 21535047517.

It is a super-2 number, since 2×71574053512² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71574053513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7308283 + ... + 7318069.

It is an arithmetic number, because the mean of its divisors is an integer number (2377933425).

Almost surely, 2^71574053512 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 71574053512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76093869600).

71574053512 is an abundant number, since it is smaller than the sum of its proper divisors (80613685688).

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

71574053512 is a wasteful number, since it uses less digits than its factorization.

71574053512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13526 (or 13522 counting only the distinct ones).

The product of its (nonzero) digits is 147000, while the sum is 40.

The spelling of 71574053512 in words is "seventy-one billion, five hundred seventy-four million, fifty-three thousand, five hundred twelve".