5644155426 has 128 divisors (see below), whose sum is σ = 14542295040. Its totient is φ = 1419441408.

The previous prime is 5644155401. The next prime is 5644155481. The reversal of 5644155426 is 6245514465.

It is a Harshad number since it is a multiple of its sum of digits (42).

Its product of digits (576000) is a multiple of the sum of its prime divisors (1440).

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, 6391581 + ... + 6392463.

It is an arithmetic number, because the mean of its divisors is an integer number (113611680).

Almost surely, 2^5644155426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5644155426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7271147520).

5644155426 is an abundant number, since it is smaller than the sum of its proper divisors (8898139614).

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

5644155426 is a wasteful number, since it uses less digits than its factorization.

5644155426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440.

The product of its digits is 576000, while the sum is 42.

The square root of 5644155426 is about 75127.5943046229. The cubic root of 5644155426 is about 1780.4631444321.

The spelling of 5644155426 in words is "five billion, six hundred forty-four million, one hundred fifty-five thousand, four hundred twenty-six".