27643123332 has 72 divisors (see below), whose sum is σ = 80240028960. Its totient is φ = 7935822720.

The previous prime is 27643123297. The next prime is 27643123381. The reversal of 27643123332 is 23332134672.

27643123332 is a `hidden beast` number, since 2 + 7 + 6 + 4 + 312 + 3 + 332 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1829473 + ... + 1844520.

Almost surely, 2^27643123332 is an apocalyptic number.

27643123332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27643123332 is an abundant number, since it is smaller than the sum of its proper divisors (52596905628).

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

27643123332 is a wasteful number, since it uses less digits than its factorization.

27643123332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3674033 (or 3674028 counting only the distinct ones).

The product of its digits is 108864, while the sum is 36.

It can be divided in two parts, 27643 and 123332, that added together give a triangular number (150975 = T₅₄₉).

The spelling of 27643123332 in words is "twenty-seven billion, six hundred forty-three million, one hundred twenty-three thousand, three hundred thirty-two".