5644120655 has 4 divisors (see below), whose sum is σ = 6772944792. Its totient is φ = 4515296520.

The previous prime is 5644120597. The next prime is 5644120661. The reversal of 5644120655 is 5560214465.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 5644120655 - 2⁶ = 5644120591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564412061 + ... + 564412070.

It is an arithmetic number, because the mean of its divisors is an integer number (1693236198).

Almost surely, 2^5644120655 is an apocalyptic number.

5644120655 is a deficient number, since it is larger than the sum of its proper divisors (1128824137).

5644120655 is a wasteful number, since it uses less digits than its factorization.

5644120655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128824136.

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 5644120655 is about 75127.3628912928. The cubic root of 5644120655 is about 1780.4594882245.

The spelling of 5644120655 in words is "five billion, six hundred forty-four million, one hundred twenty thousand, six hundred fifty-five".