72868583387 has 4 divisors (see below), whose sum is σ = 72939125160. Its totient is φ = 72798041616.

The previous prime is 72868583383. The next prime is 72868583413. The reversal of 72868583387 is 78338586827.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72868583387 - 2² = 72868583383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72868583383) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 35269337 + ... + 35271402.

It is an arithmetic number, because the mean of its divisors is an integer number (18234781290).

Almost surely, 2^72868583387 is an apocalyptic number.

72868583387 is a deficient number, since it is larger than the sum of its proper divisors (70541773).

72868583387 is a wasteful number, since it uses less digits than its factorization.

72868583387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70541772.

The product of its digits is 108380160, while the sum is 65.

The spelling of 72868583387 in words is "seventy-two billion, eight hundred sixty-eight million, five hundred eighty-three thousand, three hundred eighty-seven".