72776545255 has 8 divisors (see below), whose sum is σ = 87337090224. Its totient is φ = 58217745600.

The previous prime is 72776545241. The next prime is 72776545273. The reversal of 72776545255 is 55254567727.

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

It is not a de Polignac number, because 72776545255 - 2⁵ = 72776545223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72776545196 and 72776545205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342766 + ... + 512875.

It is an arithmetic number, because the mean of its divisors is an integer number (10917136278).

Almost surely, 2^72776545255 is an apocalyptic number.

72776545255 is a deficient number, since it is larger than the sum of its proper divisors (14560544969).

72776545255 is a wasteful number, since it uses less digits than its factorization.

72776545255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872657.

The product of its digits is 20580000, while the sum is 55.

The spelling of 72776545255 in words is "seventy-two billion, seven hundred seventy-six million, five hundred forty-five thousand, two hundred fifty-five".