5546191644 has 72 divisors (see below), whose sum is σ = 16241869280. Its totient is φ = 1562913792.

The previous prime is 5546191559. The next prime is 5546191661. The reversal of 5546191644 is 4461916455.

5546191644 is a `hidden beast` number, since 554 + 6 + 1 + 91 + 6 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 5546191644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132349 + ... + 169140.

Almost surely, 2^5546191644 is an apocalyptic number.

It is an amenable number.

5546191644 is an abundant number, since it is smaller than the sum of its proper divisors (10695677636).

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

5546191644 is a wasteful number, since it uses less digits than its factorization.

5546191644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301579 (or 301574 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 5546191644 is about 74472.7577305957. The cubic root of 5546191644 is about 1770.1019916332.

The spelling of 5546191644 in words is "five billion, five hundred forty-six million, one hundred ninety-one thousand, six hundred forty-four".