945547745549 has 16 divisors (see below), whose sum is σ = 1065517449216. Its totient is φ = 831284866800.

The previous prime is 945547745521. The next prime is 945547745609.

945547745549 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-945547745549 is a prime.

It is a super-2 number, since 2×945547745549² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945547745509) 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, 464717 + ... + 1451570.

It is an arithmetic number, because the mean of its divisors is an integer number (66594840576).

Almost surely, 2^945547745549 is an apocalyptic number.

It is an amenable number.

945547745549 is a deficient number, since it is larger than the sum of its proper divisors (119969703667).

945547745549 is a wasteful number, since it uses less digits than its factorization.

945547745549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917776.

The product of its digits is 635040000, while the sum is 68.

The spelling of 945547745549 in words is "nine hundred forty-five billion, five hundred forty-seven million, seven hundred forty-five thousand, five hundred forty-nine".