72867538686 has 8 divisors (see below), whose sum is σ = 145735077384. Its totient is φ = 24289179560.

The previous prime is 72867538673. The next prime is 72867538693. The reversal of 72867538686 is 68683576827.

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

72867538686 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6072294885 + ... + 6072294896.

It is an arithmetic number, because the mean of its divisors is an integer number (18216884673).

Almost surely, 2^72867538686 is an apocalyptic number.

72867538686 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72867538686 is a wasteful number, since it uses less digits than its factorization.

72867538686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12144589786.

The product of its digits is 162570240, while the sum is 66.

The spelling of 72867538686 in words is "seventy-two billion, eight hundred sixty-seven million, five hundred thirty-eight thousand, six hundred eighty-six".