71247064837 has 8 divisors (see below), whose sum is σ = 76733691104. Its totient is φ = 65761307568.

The previous prime is 71247064807. The next prime is 71247064883. The reversal of 71247064837 is 73846074217.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 71247064837 - 2¹⁵ = 71247032069 is a prime.

It is a super-2 number, since 2×71247064837² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71247064807) 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, 41703 + ... + 379780.

It is an arithmetic number, because the mean of its divisors is an integer number (9591711388).

Almost surely, 2^71247064837 is an apocalyptic number.

It is an amenable number.

71247064837 is a deficient number, since it is larger than the sum of its proper divisors (5486626267).

71247064837 is a wasteful number, since it uses less digits than its factorization.

71247064837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434499.

The product of its (nonzero) digits is 1580544, while the sum is 49.

The spelling of 71247064837 in words is "seventy-one billion, two hundred forty-seven million, sixty-four thousand, eight hundred thirty-seven".