7749442449477 has 6 divisors (see below), whose sum is σ = 11193639093702. Its totient is φ = 5166294966312.

The previous prime is 7749442449461. The next prime is 7749442449487.

7749442449477 is a `hidden beast` number, since 7 + 7 + 4 + 9 + 44 + 24 + 494 + 77 = 666.

7749442449477 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 4421120201316 + 3328322248161 = 2102646^2 + 1824369^2 .

It is not a de Polignac number, because 7749442449477 - 2⁴ = 7749442449461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7749442449487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 430524580518 + ... + 430524580535.

It is an arithmetic number, because the mean of its divisors is an integer number (1865606515617).

Almost surely, 2^{7749442449477} is an apocalyptic number.

It is an amenable number.

7749442449477 is a deficient number, since it is larger than the sum of its proper divisors (3444196644225).

7749442449477 is a wasteful number, since it uses less digits than its factorization.

7749442449477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861049161059 (or 861049161056 counting only the distinct ones).

The product of its digits is 1593188352, while the sum is 72.

The spelling of 7749442449477 in words is "seven trillion, seven hundred forty-nine billion, four hundred forty-two million, four hundred forty-nine thousand, four hundred seventy-seven".