5445047664 has 320 divisors, whose sum is σ = 19015449600. Its totient is φ = 1457160192.

The previous prime is 5445047653. The next prime is 5445047701. The reversal of 5445047664 is 4667405445.

5445047664 is a `hidden beast` number, since 544 + 5 + 0 + 47 + 6 + 64 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5572744 + ... + 5573720.

It is an arithmetic number, because the mean of its divisors is an integer number (59423280).

Almost surely, 2^5445047664 is an apocalyptic number.

5445047664 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5445047664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9507724800).

5445047664 is an abundant number, since it is smaller than the sum of its proper divisors (13570401936).

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

5445047664 is a wasteful number, since it uses less digits than its factorization.

5445047664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117 (or 1105 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 45.

The square root of 5445047664 is about 73790.5662263138. The cubic root of 5445047664 is about 1759.2756644030.

The spelling of 5445047664 in words is "five billion, four hundred forty-five million, forty-seven thousand, six hundred sixty-four".