71488158947 has 4 divisors (see below), whose sum is σ = 72033870216. Its totient is φ = 70942447680.

The previous prime is 71488158919. The next prime is 71488158967. The reversal of 71488158947 is 74985188417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74985188417 = 50231 ⋅1492807.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71488158947 is a prime.

It is a super-2 number, since 2×71488158947² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71488158947.

It is not an unprimeable number, because it can be changed into a prime (71488158967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272855438 + ... + 272855699.

It is an arithmetic number, because the mean of its divisors is an integer number (18008467554).

Almost surely, 2^71488158947 is an apocalyptic number.

71488158947 is a deficient number, since it is larger than the sum of its proper divisors (545711269).

71488158947 is a wasteful number, since it uses less digits than its factorization.

71488158947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545711268.

The product of its digits is 18063360, while the sum is 62.

The spelling of 71488158947 in words is "seventy-one billion, four hundred eighty-eight million, one hundred fifty-eight thousand, nine hundred forty-seven".