71504750464 has 256 divisors, whose sum is σ = 179572256640. Its totient is φ = 27662745600.

The previous prime is 71504750441. The next prime is 71504750483. The reversal of 71504750464 is 46405740517.

It is a super-2 number, since 2×71504750464² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71504750464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38094294 + ... + 38096170.

Almost surely, 2^71504750464 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 71504750464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89786128320).

71504750464 is an abundant number, since it is smaller than the sum of its proper divisors (108067506176).

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

71504750464 is a wasteful number, since it uses less digits than its factorization.

71504750464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017 (or 2005 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 43.

The spelling of 71504750464 in words is "seventy-one billion, five hundred four million, seven hundred fifty thousand, four hundred sixty-four".