6411532644 has 72 divisors (see below), whose sum is σ = 18335143008. Its totient is φ = 1942885440.

The previous prime is 6411532627. The next prime is 6411532661. The reversal of 6411532644 is 4462351146.

6411532644 is a `hidden beast` number, since 6 + 4 + 1 + 1 + 5 + 3 + 2 + 644 = 666.

It is an interprime number because it is at equal distance from previous prime (6411532627) and next prime (6411532661).

It is a super-2 number, since 2×6411532644² = 82215501690155261472, which contains 22 as substring.

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 = 6411532599 and 6411532608.

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, 289137 + ... + 310520.

It is an arithmetic number, because the mean of its divisors is an integer number (254654764).

Almost surely, 2^6411532644 is an apocalyptic number.

It is an amenable number.

6411532644 is an abundant number, since it is smaller than the sum of its proper divisors (11923610364).

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

6411532644 is a wasteful number, since it uses less digits than its factorization.

6411532644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599687 (or 599673 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 6411532644 is about 80072.0465830617. The cubic root of 6411532644 is about 1857.7500682500.

The spelling of 6411532644 in words is "six billion, four hundred eleven million, five hundred thirty-two thousand, six hundred forty-four".