72255715887 has 8 divisors (see below), whose sum is σ = 96358754560. Its totient is φ = 48161577240.

The previous prime is 72255715877. The next prime is 72255715891. The reversal of 72255715887 is 78851755227.

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

It is not a de Polignac number, because 72255715887 - 2⁶ = 72255715823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72255715837) 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 7 ways as a sum of consecutive naturals, for example, 2206039 + ... + 2238552.

It is an arithmetic number, because the mean of its divisors is an integer number (12044844320).

Almost surely, 2^72255715887 is an apocalyptic number.

72255715887 is a deficient number, since it is larger than the sum of its proper divisors (24103038673).

72255715887 is a wasteful number, since it uses less digits than its factorization.

72255715887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4450013.

The product of its digits is 10976000, while the sum is 57.

The spelling of 72255715887 in words is "seventy-two billion, two hundred fifty-five million, seven hundred fifteen thousand, eight hundred eighty-seven".