71142205215 has 8 divisors (see below), whose sum is σ = 113827528368. Its totient is φ = 37942509440.

The previous prime is 71142205213. The next prime is 71142205219. The reversal of 71142205215 is 51250224117.

It is a happy number.

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

It is not a de Polignac number, because 71142205215 - 2¹ = 71142205213 is a prime.

It is a super-2 number, since 2×71142205215² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71142205213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2371406826 + ... + 2371406855.

It is an arithmetic number, because the mean of its divisors is an integer number (14228441046).

Almost surely, 2^71142205215 is an apocalyptic number.

71142205215 is a deficient number, since it is larger than the sum of its proper divisors (42685323153).

71142205215 is a wasteful number, since it uses less digits than its factorization.

71142205215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742813689.

The product of its (nonzero) digits is 5600, while the sum is 30.

The spelling of 71142205215 in words is "seventy-one billion, one hundred forty-two million, two hundred five thousand, two hundred fifteen".