7749666669477 has 8 divisors (see below), whose sum is σ = 10427686038880. Its totient is φ = 5119045873200.

The previous prime is 7749666669463. The next prime is 7749666669509.

7749666669477 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7749666669477 - 2⁸ = 7749666669221 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 7749666669477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7749666669677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11849642899 + ... + 11849643552.

It is an arithmetic number, because the mean of its divisors is an integer number (1303460754860).

Almost surely, 2^{7749666669477} is an apocalyptic number.

It is an amenable number.

7749666669477 is a deficient number, since it is larger than the sum of its proper divisors (2678019369403).

7749666669477 is a wasteful number, since it uses less digits than its factorization.

7749666669477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23699286563.

The product of its digits is 24196548096, while the sum is 84.

The spelling of 7749666669477 in words is "seven trillion, seven hundred forty-nine billion, six hundred sixty-six million, six hundred sixty-nine thousand, four hundred seventy-seven".