7645561916773 has 8 divisors (see below), whose sum is σ = 8341232682816. Its totient is φ = 6949994431200.

The previous prime is 7645561916771. The next prime is 7645561916833. The reversal of 7645561916773 is 3776191655467.

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

It is a cyclic number.

It is not a de Polignac number, because 7645561916773 - 2¹ = 7645561916771 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7645561916699 and 7645561916708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7645561916771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25665288 + ... + 25961473.

It is an arithmetic number, because the mean of its divisors is an integer number (1042654085352).

Almost surely, 2^{7645561916773} is an apocalyptic number.

It is an amenable number.

7645561916773 is a deficient number, since it is larger than the sum of its proper divisors (695670766043).

7645561916773 is a wasteful number, since it uses less digits than its factorization.

7645561916773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51640235.

The product of its digits is 200037600, while the sum is 67.

The spelling of 7645561916773 in words is "seven trillion, six hundred forty-five billion, five hundred sixty-one million, nine hundred sixteen thousand, seven hundred seventy-three".