7277968385 has 4 divisors (see below), whose sum is σ = 8733562068. Its totient is φ = 5822374704.

The previous prime is 7277968349. The next prime is 7277968403. The reversal of 7277968385 is 5838697727.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3252192784 + 4025775601 = 57028^2 + 63449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7277968385 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727796834 + ... + 727796843.

It is an arithmetic number, because the mean of its divisors is an integer number (2183390517).

Almost surely, 2^7277968385 is an apocalyptic number.

It is an amenable number.

7277968385 is a deficient number, since it is larger than the sum of its proper divisors (1455593683).

7277968385 is a wasteful number, since it uses less digits than its factorization.

7277968385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455593682.

The product of its digits is 35562240, while the sum is 62.

The square root of 7277968385 is about 85311.0097525519. The cubic root of 7277968385 is about 1937.9239122943.

The spelling of 7277968385 in words is "seven billion, two hundred seventy-seven million, nine hundred sixty-eight thousand, three hundred eighty-five".