945549945549 has 48 divisors (see below), whose sum is σ = 1505019080448. Its totient is φ = 567270000000.

The previous prime is 945549945541. The next prime is 945549945581.

945549945549 is a `hidden beast` number, since 9 + 4 + 55 + 499 + 45 + 5 + 49 = 666.

945549945549 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 945549945549 - 2³ = 945549945541 is a prime.

It is a super-2 number, since 2×945549945549² (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 (945549945541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95495499 + ... + 95505399.

It is an arithmetic number, because the mean of its divisors is an integer number (31354564176).

Almost surely, 2^945549945549 is an apocalyptic number.

945549945549 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

945549945549 is a deficient number, since it is larger than the sum of its proper divisors (559469134899).

945549945549 is a wasteful number, since it uses less digits than its factorization.

945549945549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19570 (or 19567 counting only the distinct ones).

The product of its digits is 1049760000, while the sum is 72.

The spelling of 945549945549 in words is "nine hundred forty-five billion, five hundred forty-nine million, nine hundred forty-five thousand, five hundred forty-nine".