7766747049 has 4 divisors (see below), whose sum is σ = 10355662736. Its totient is φ = 5177831364.

The previous prime is 7766747003. The next prime is 7766747057. The reversal of 7766747049 is 9407476677.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7766747049 - 2¹² = 7766742953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7766747049.

It is not an unprimeable number, because it can be changed into a prime (7766747089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1294457839 + ... + 1294457844.

It is an arithmetic number, because the mean of its divisors is an integer number (2588915684).

Almost surely, 2^7766747049 is an apocalyptic number.

It is an amenable number.

7766747049 is a deficient number, since it is larger than the sum of its proper divisors (2588915687).

7766747049 is a wasteful number, since it uses less digits than its factorization.

7766747049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588915686.

The product of its (nonzero) digits is 12446784, while the sum is 57.

The square root of 7766747049 is about 88129.1498256962. The cubic root of 7766747049 is about 1980.3702202832.

The spelling of 7766747049 in words is "seven billion, seven hundred sixty-six million, seven hundred forty-seven thousand, forty-nine".