72068683687 has 48 divisors (see below), whose sum is σ = 98676772992. Its totient is φ = 51740095680.

The previous prime is 72068683669. The next prime is 72068683711. The reversal of 72068683687 is 78638686027.

It is not a de Polignac number, because 72068683687 - 2²⁷ = 71934465959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72068683787) 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 47 ways as a sum of consecutive naturals, for example, 3823428 + ... + 3842230.

It is an arithmetic number, because the mean of its divisors is an integer number (2055766104).

Almost surely, 2^72068683687 is an apocalyptic number.

72068683687 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

72068683687 is a deficient number, since it is larger than the sum of its proper divisors (26608089305).

72068683687 is a wasteful number, since it uses less digits than its factorization.

72068683687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19388 (or 19381 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 61.

The spelling of 72068683687 in words is "seventy-two billion, sixty-eight million, six hundred eighty-three thousand, six hundred eighty-seven".