945646646549 has 16 divisors (see below), whose sum is σ = 1042085191680. Its totient is φ = 850983784560.

The previous prime is 945646646543. The next prime is 945646646557.

945646646549 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 945646646549 - 2⁸ = 945646646293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945646646543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145139 + ... + 1382880.

It is an arithmetic number, because the mean of its divisors is an integer number (65130324480).

Almost surely, 2^945646646549 is an apocalyptic number.

It is an amenable number.

945646646549 is a deficient number, since it is larger than the sum of its proper divisors (96438545131).

945646646549 is a wasteful number, since it uses less digits than its factorization.

945646646549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528600.

The product of its digits is 671846400, while the sum is 68.

The spelling of 945646646549 in words is "nine hundred forty-five billion, six hundred forty-six million, six hundred forty-six thousand, five hundred forty-nine".