71867409839 has 16 divisors (see below), whose sum is σ = 75667255488. Its totient is φ = 68126564352.

The previous prime is 71867409811. The next prime is 71867409877. The reversal of 71867409839 is 93890476817.

It is a cyclic number.

It is not a de Polignac number, because 71867409839 - 2²⁸ = 71598974383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71867405839) 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, 1133609 + ... + 1195325.

It is an arithmetic number, because the mean of its divisors is an integer number (4729203468).

Almost surely, 2^71867409839 is an apocalyptic number.

71867409839 is a deficient number, since it is larger than the sum of its proper divisors (3799845649).

71867409839 is a wasteful number, since it uses less digits than its factorization.

71867409839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62194.

The product of its (nonzero) digits is 18289152, while the sum is 62.

The spelling of 71867409839 in words is "seventy-one billion, eight hundred sixty-seven million, four hundred nine thousand, eight hundred thirty-nine".