71945909398893 has 16 divisors (see below), whose sum is σ = 96080748940800. Its totient is φ = 47887563284400.

The previous prime is 71945909398849. The next prime is 71945909398919. The reversal of 71945909398893 is 39889390954917.

It is not a de Polignac number, because 71945909398893 - 2³³ = 71937319464301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71945909398093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2402703 + ... + 12233756.

It is an arithmetic number, because the mean of its divisors is an integer number (6005046808800).

Almost surely, 2^{71945909398893} is an apocalyptic number.

It is an amenable number.

71945909398893 is a deficient number, since it is larger than the sum of its proper divisors (24134839541907).

71945909398893 is a wasteful number, since it uses less digits than its factorization.

71945909398893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14639072.

The product of its (nonzero) digits is 4761711360, while the sum is 84.

The spelling of 71945909398893 in words is "seventy-one trillion, nine hundred forty-five billion, nine hundred nine million, three hundred ninety-eight thousand, eight hundred ninety-three".