71684005407 has 16 divisors (see below), whose sum is σ = 110460107520. Its totient is φ = 40502037312.

The previous prime is 71684005363. The next prime is 71684005441. The reversal of 71684005407 is 70450048617.

It is not a de Polignac number, because 71684005407 - 2¹⁰ = 71684004383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71684005307) 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, 19175233 + ... + 19178970.

It is an arithmetic number, because the mean of its divisors is an integer number (6903756720).

Almost surely, 2^71684005407 is an apocalyptic number.

71684005407 is a deficient number, since it is larger than the sum of its proper divisors (38776102113).

71684005407 is a wasteful number, since it uses less digits than its factorization.

71684005407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38354302.

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 71684005407 in words is "seventy-one billion, six hundred eighty-four million, five thousand, four hundred seven".