5644211988807 has 18 divisors (see below), whose sum is σ = 9317460443928. Its totient is φ = 3225253218192.

The previous prime is 5644211988803. The next prime is 5644211988817. The reversal of 5644211988807 is 7088891124465.

5644211988807 is a `hidden beast` number, since 56 + 4 + 421 + 1 + 9 + 88 + 80 + 7 = 666.

It is not a de Polignac number, because 5644211988807 - 2² = 5644211988803 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5644211988803) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18707313 + ... + 19006629.

Almost surely, 2^{5644211988807} is an apocalyptic number.

5644211988807 is a deficient number, since it is larger than the sum of its proper divisors (3673248455121).

5644211988807 is an frugal number, since it uses more digits than its factorization.

5644211988807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598647 (or 299327 counting only the distinct ones).

The product of its (nonzero) digits is 30965760, while the sum is 63.

Multiplying 5644211988807 by its sum of digits (63), we get a square (355585355294841 = 18856971²).

5644211988807 divided by its sum of digits (63) gives a square (89590666489 = 299317²).

The spelling of 5644211988807 in words is "five trillion, six hundred forty-four billion, two hundred eleven million, nine hundred eighty-eight thousand, eight hundred seven".