71868578615 has 16 divisors (see below), whose sum is σ = 86762725536. Its totient is φ = 57148416000.

The previous prime is 71868578569. The next prime is 71868578623. The reversal of 71868578615 is 51687586817.

It is not a de Polignac number, because 71868578615 - 2⁸ = 71868578359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1127960 + ... + 1189970.

It is an arithmetic number, because the mean of its divisors is an integer number (5422670346).

Almost surely, 2^71868578615 is an apocalyptic number.

71868578615 is a deficient number, since it is larger than the sum of its proper divisors (14894146921).

71868578615 is a wasteful number, since it uses less digits than its factorization.

71868578615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63410.

The product of its digits is 22579200, while the sum is 62.

The spelling of 71868578615 in words is "seventy-one billion, eight hundred sixty-eight million, five hundred seventy-eight thousand, six hundred fifteen".