71382709915 has 16 divisors (see below), whose sum is σ = 93916051200. Its totient is φ = 51653812320.

The previous prime is 71382709913. The next prime is 71382709921. The reversal of 71382709915 is 51990728317.

It is not a de Polignac number, because 71382709915 - 2¹ = 71382709913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71382709913) 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, 3250029 + ... + 3271918.

It is an arithmetic number, because the mean of its divisors is an integer number (5869753200).

Almost surely, 2^71382709915 is an apocalyptic number.

71382709915 is a deficient number, since it is larger than the sum of its proper divisors (22533341285).

71382709915 is a wasteful number, since it uses less digits than its factorization.

71382709915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6522162.

The product of its (nonzero) digits is 952560, while the sum is 52.

The spelling of 71382709915 in words is "seventy-one billion, three hundred eighty-two million, seven hundred nine thousand, nine hundred fifteen".