71545463331 has 4 divisors (see below), whose sum is σ = 95393951112. Its totient is φ = 47696975552.

The previous prime is 71545463329. The next prime is 71545463333. The reversal of 71545463331 is 13336454517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13336454517 = 3 ⋅4445484839.

It is an interprime number because it is at equal distance from previous prime (71545463329) and next prime (71545463333).

It is a cyclic number.

It is not a de Polignac number, because 71545463331 - 2¹ = 71545463329 is a prime.

It is a super-2 number, since 2×71545463331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71545463333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11924243886 + ... + 11924243891.

It is an arithmetic number, because the mean of its divisors is an integer number (23848487778).

Almost surely, 2^71545463331 is an apocalyptic number.

71545463331 is a deficient number, since it is larger than the sum of its proper divisors (23848487781).

71545463331 is a wasteful number, since it uses less digits than its factorization.

71545463331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23848487780.

The product of its digits is 453600, while the sum is 42.

The spelling of 71545463331 in words is "seventy-one billion, five hundred forty-five million, four hundred sixty-three thousand, three hundred thirty-one".