5581629645 has 16 divisors (see below), whose sum is σ = 8954180160. Its totient is φ = 2969011584.

The previous prime is 5581629611. The next prime is 5581629653. The reversal of 5581629645 is 5469261855.

It is a happy number.

It is not a de Polignac number, because 5581629645 - 2¹⁰ = 5581628621 is a prime.

It is a super-3 number, since 3×5581629645³ (a number of 30 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 485224 + ... + 496593.

It is an arithmetic number, because the mean of its divisors is an integer number (559636260).

Almost surely, 2^5581629645 is an apocalyptic number.

It is an amenable number.

5581629645 is a deficient number, since it is larger than the sum of its proper divisors (3372550515).

5581629645 is a wasteful number, since it uses less digits than its factorization.

5581629645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982204.

The product of its digits is 2592000, while the sum is 51.

The square root of 5581629645 is about 74710.3048113177. The cubic root of 5581629645 is about 1773.8640772873.

The spelling of 5581629645 in words is "five billion, five hundred eighty-one million, six hundred twenty-nine thousand, six hundred forty-five".