7277779460985 has 16 divisors (see below), whose sum is σ = 12703033241280. Its totient is φ = 3528620344640.

The previous prime is 7277779460981. The next prime is 7277779461019. The reversal of 7277779460985 is 5890649777727.

It is not a de Polignac number, because 7277779460985 - 2² = 7277779460981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7277779460985.

It is not an unprimeable number, because it can be changed into a prime (7277779460981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22053876990 + ... + 22053877319.

It is an arithmetic number, because the mean of its divisors is an integer number (793939577580).

Almost surely, 2^{7277779460985} is an apocalyptic number.

It is an amenable number.

7277779460985 is a deficient number, since it is larger than the sum of its proper divisors (5425253780295).

7277779460985 is a wasteful number, since it uses less digits than its factorization.

7277779460985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44107754328.

The product of its (nonzero) digits is 2613824640, while the sum is 78.

The spelling of 7277779460985 in words is "seven trillion, two hundred seventy-seven billion, seven hundred seventy-nine million, four hundred sixty thousand, nine hundred eighty-five".