71886693863409 has 8 divisors (see below), whose sum is σ = 96213369734592. Its totient is φ = 47742240283920.

The previous prime is 71886693863401. The next prime is 71886693863423. The reversal of 71886693863409 is 90436839668817.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71886693863409 - 2³ = 71886693863401 is a prime.

It is a super-2 number, since 2×71886693863409² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71886693863401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45555572002 + ... + 45555573579.

It is an arithmetic number, because the mean of its divisors is an integer number (12026671216824).

Almost surely, 2^{71886693863409} is an apocalyptic number.

It is an amenable number.

71886693863409 is a deficient number, since it is larger than the sum of its proper divisors (24326675871183).

71886693863409 is a wasteful number, since it uses less digits than its factorization.

71886693863409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91111145847.

The product of its (nonzero) digits is 2257403904, while the sum is 78.

The spelling of 71886693863409 in words is "seventy-one trillion, eight hundred eighty-six billion, six hundred ninety-three million, eight hundred sixty-three thousand, four hundred nine".