5641620444 has 36 divisors (see below), whose sum is σ = 14752515960. Its totient is φ = 1815693600.

The previous prime is 5641620433. The next prime is 5641620463. The reversal of 5641620444 is 4440261465.

5641620444 is a `hidden beast` number, since 5 + 641 + 6 + 2 + 0 + 4 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5641620399 and 5641620408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2700882 + ... + 2702969.

It is an arithmetic number, because the mean of its divisors is an integer number (409792110).

Almost surely, 2^5641620444 is an apocalyptic number.

It is an amenable number.

5641620444 is an abundant number, since it is smaller than the sum of its proper divisors (9110895516).

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

5641620444 is a wasteful number, since it uses less digits than its factorization.

5641620444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5403890 (or 5403885 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The square root of 5641620444 is about 75110.7212320585. The cubic root of 5641620444 is about 1780.1965490153.

The spelling of 5641620444 in words is "five billion, six hundred forty-one million, six hundred twenty thousand, four hundred forty-four".