72897903885 has 8 divisors (see below), whose sum is σ = 116636646240. Its totient is φ = 38878882064.

The previous prime is 72897903853. The next prime is 72897903893. The reversal of 72897903885 is 58830979827.

It is a happy number.

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 72897903885 - 2⁵ = 72897903853 is a prime.

It is a super-3 number, since 3×72897903885³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2429930115 + ... + 2429930144.

It is an arithmetic number, because the mean of its divisors is an integer number (14579580780).

Almost surely, 2^72897903885 is an apocalyptic number.

It is an amenable number.

72897903885 is a deficient number, since it is larger than the sum of its proper divisors (43738742355).

72897903885 is a wasteful number, since it uses less digits than its factorization.

72897903885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4859860267.

The product of its (nonzero) digits is 60963840, while the sum is 66.

The spelling of 72897903885 in words is "seventy-two billion, eight hundred ninety-seven million, nine hundred three thousand, eight hundred eighty-five".