71839192945 has 16 divisors (see below), whose sum is σ = 97724571840. Its totient is φ = 50258349504.

The previous prime is 71839192897. The next prime is 71839192961. The reversal of 71839192945 is 54929193817.

It is a cyclic number.

It is not a de Polignac number, because 71839192945 - 2¹¹ = 71839190897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71839192945.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29083459 + ... + 29085928.

It is an arithmetic number, because the mean of its divisors is an integer number (6107785740).

Almost surely, 2^71839192945 is an apocalyptic number.

It is an amenable number.

71839192945 is a deficient number, since it is larger than the sum of its proper divisors (25885378895).

71839192945 is a wasteful number, since it uses less digits than its factorization.

71839192945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58169424.

The product of its digits is 4898880, while the sum is 58.

The spelling of 71839192945 in words is "seventy-one billion, eight hundred thirty-nine million, one hundred ninety-two thousand, nine hundred forty-five".