27867645432 has 64 divisors (see below), whose sum is σ = 84447417600. Its totient is φ = 8444740320.

The previous prime is 27867645397. The next prime is 27867645493. The reversal of 27867645432 is 23454676872.

27867645432 is a `hidden beast` number, since 27 + 8 + 6 + 76 + 4 + 543 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 5862028 + ... + 5866779.

It is an arithmetic number, because the mean of its divisors is an integer number (1319490900).

Almost surely, 2^27867645432 is an apocalyptic number.

27867645432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27867645432 is an abundant number, since it is smaller than the sum of its proper divisors (56579772168).

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

27867645432 is a wasteful number, since it uses less digits than its factorization.

27867645432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11728833 (or 11728823 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 54.

The spelling of 27867645432 in words is "twenty-seven billion, eight hundred sixty-seven million, six hundred forty-five thousand, four hundred thirty-two".