71487995789 has 8 divisors (see below), whose sum is σ = 83438876928. Its totient is φ = 59971692240.

The previous prime is 71487995783. The next prime is 71487995807. The reversal of 71487995789 is 98759978417.

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 71487995789 - 2¹² = 71487991693 is a prime.

It is a super-2 number, since 2×71487995789² (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 (71487995783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108644042 + ... + 108644699.

It is an arithmetic number, because the mean of its divisors is an integer number (10429859616).

Almost surely, 2^71487995789 is an apocalyptic number.

It is an amenable number.

71487995789 is a deficient number, since it is larger than the sum of its proper divisors (11950881139).

71487995789 is a wasteful number, since it uses less digits than its factorization.

71487995789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217288795.

The product of its digits is 320060160, while the sum is 74.

The spelling of 71487995789 in words is "seventy-one billion, four hundred eighty-seven million, nine hundred ninety-five thousand, seven hundred eighty-nine".