71211757315 has 16 divisors (see below), whose sum is σ = 85977158400. Its totient is φ = 56620930432.

The previous prime is 71211757261. The next prime is 71211757321. The reversal of 71211757315 is 51375711217.

It is a cyclic number.

It is not a de Polignac number, because 71211757315 - 2¹⁵ = 71211724547 is a prime.

It is a super-2 number, since 2×71211757315² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2893281 + ... + 2917789.

It is an arithmetic number, because the mean of its divisors is an integer number (5373572400).

Almost surely, 2^71211757315 is an apocalyptic number.

71211757315 is a deficient number, since it is larger than the sum of its proper divisors (14765401085).

71211757315 is a wasteful number, since it uses less digits than its factorization.

71211757315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28046.

The product of its digits is 51450, while the sum is 40.

The spelling of 71211757315 in words is "seventy-one billion, two hundred eleven million, seven hundred fifty-seven thousand, three hundred fifteen".