71534785104 has 120 divisors (see below), whose sum is σ = 209525464512. Its totient is φ = 22740157440.

The previous prime is 71534785097. The next prime is 71534785151. The reversal of 71534785104 is 40158743517.

71534785104 is a `hidden beast` number, since 7 + 1 + 534 + 7 + 8 + 5 + 104 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 71534785104.

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, 1084099 + ... + 1148189.

Almost surely, 2^71534785104 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 71534785104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104762732256).

71534785104 is an abundant number, since it is smaller than the sum of its proper divisors (137990679408).

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

71534785104 is a wasteful number, since it uses less digits than its factorization.

71534785104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64465 (or 64456 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 45.

The spelling of 71534785104 in words is "seventy-one billion, five hundred thirty-four million, seven hundred eighty-five thousand, one hundred four".