4547445640 has 16 divisors (see below), whose sum is σ = 10231752780. Its totient is φ = 1818978240.

The previous prime is 4547445593. The next prime is 4547445647. The reversal of 4547445640 is 465447454.

It can be written as a sum of positive squares in 2 ways, for example, as 4539794884 + 7650756 = 67378^2 + 2766^2 .

It is not an unprimeable number, because it can be changed into a prime (4547445647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56843031 + ... + 56843110.

Almost surely, 2^4547445640 is an apocalyptic number.

4547445640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4547445640 is an abundant number, since it is smaller than the sum of its proper divisors (5684307140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4547445640 is a wasteful number, since it uses less digits than its factorization.

4547445640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113686152 (or 113686148 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 43.

The square root of 4547445640 is about 67434.7509819677. The cubic root of 4547445640 is about 1656.7456491368.

The spelling of 4547445640 in words is "four billion, five hundred forty-seven million, four hundred forty-five thousand, six hundred forty".