5445638785 has 16 divisors (see below), whose sum is σ = 6708439296. Its totient is φ = 4241691648.

The previous prime is 5445638771. The next prime is 5445638833. The reversal of 5445638785 is 5878365445.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5445638785 - 2⁹ = 5445638273 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14679 + ... + 105388.

It is an arithmetic number, because the mean of its divisors is an integer number (419277456).

Almost surely, 2^5445638785 is an apocalyptic number.

It is an amenable number.

5445638785 is a deficient number, since it is larger than the sum of its proper divisors (1262800511).

5445638785 is a wasteful number, since it uses less digits than its factorization.

5445638785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120312.

The product of its digits is 16128000, while the sum is 55.

The square root of 5445638785 is about 73794.5715144414. The cubic root of 5445638785 is about 1759.3393251350.

The spelling of 5445638785 in words is "five billion, four hundred forty-five million, six hundred thirty-eight thousand, seven hundred eighty-five".