71390406594 has 64 divisors (see below), whose sum is σ = 162876994560. Its totient is φ = 20665497600.

The previous prime is 71390406557. The next prime is 71390406601. The reversal of 71390406594 is 49560409317.

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, 3595494 + ... + 3615294.

It is an arithmetic number, because the mean of its divisors is an integer number (2544953040).

Almost surely, 2^71390406594 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71390406594, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81438497280).

71390406594 is an abundant number, since it is smaller than the sum of its proper divisors (91486587966).

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

71390406594 is a wasteful number, since it uses less digits than its factorization.

71390406594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22555.

The product of its (nonzero) digits is 816480, while the sum is 48.

The spelling of 71390406594 in words is "seventy-one billion, three hundred ninety million, four hundred six thousand, five hundred ninety-four".