71391148494 has 64 divisors (see below), whose sum is σ = 156403630080. Its totient is φ = 21654689760.

The previous prime is 71391148459. The next prime is 71391148531. The reversal of 71391148494 is 49484119317.

It is a super-3 number, since 3×71391148494³ (a number of 34 digits) contains 333 as substring.

It is a Curzon number.

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, 110979 + ... + 393825.

It is an arithmetic number, because the mean of its divisors is an integer number (2443806720).

Almost surely, 2^71391148494 is an apocalyptic number.

71391148494 is an abundant number, since it is smaller than the sum of its proper divisors (85012481586).

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

71391148494 is a wasteful number, since it uses less digits than its factorization.

71391148494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282965.

The product of its digits is 870912, while the sum is 51.

The spelling of 71391148494 in words is "seventy-one billion, three hundred ninety-one million, one hundred forty-eight thousand, four hundred ninety-four".