6181656832 has 72 divisors (see below), whose sum is σ = 13411031480. Its totient is φ = 2826731520.

The previous prime is 6181656781. The next prime is 6181656917. The reversal of 6181656832 is 2386561816.

It can be written as a sum of positive squares in 4 ways, for example, as 1620545536 + 4561111296 = 40256^2 + 67536^2 .

It is a super-2 number, since 2×6181656832² = 76425762377224552448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354232 + ... + 371272.

Almost surely, 2^6181656832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6181656832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6705515740).

6181656832 is an abundant number, since it is smaller than the sum of its proper divisors (7229374648).

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

6181656832 is a wasteful number, since it uses less digits than its factorization.

6181656832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17179 (or 17165 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 6181656832 is about 78623.5132260064. The cubic root of 6181656832 is about 1835.2770366770.

The spelling of 6181656832 in words is "six billion, one hundred eighty-one million, six hundred fifty-six thousand, eight hundred thirty-two".