7266788978255 has 16 divisors (see below), whose sum is σ = 8961542042880. Its totient is φ = 5652701551872.

The previous prime is 7266788978233. The next prime is 7266788978287. The reversal of 7266788978255 is 5528798876627.

It is a cyclic number.

It is not a de Polignac number, because 7266788978255 - 2⁸ = 7266788977999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7266788978255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12243590 + ... + 12823379.

It is an arithmetic number, because the mean of its divisors is an integer number (560096377680).

Almost surely, 2^{7266788978255} is an apocalyptic number.

7266788978255 is a deficient number, since it is larger than the sum of its proper divisors (1694753064625).

7266788978255 is a wasteful number, since it uses less digits than its factorization.

7266788978255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25068578.

The product of its digits is 5689958400, while the sum is 80.

The spelling of 7266788978255 in words is "seven trillion, two hundred sixty-six billion, seven hundred eighty-eight million, nine hundred seventy-eight thousand, two hundred fifty-five".