27491787532 has 12 divisors (see below), whose sum is σ = 52484321736. Its totient is φ = 12496267040.

The previous prime is 27491787527. The next prime is 27491787551. The reversal of 27491787532 is 23578719472.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312406633 + ... + 312406720.

It is an arithmetic number, because the mean of its divisors is an integer number (4373693478).

Almost surely, 2^27491787532 is an apocalyptic number.

27491787532 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27491787532 is a deficient number, since it is larger than the sum of its proper divisors (24992534204).

27491787532 is a wasteful number, since it uses less digits than its factorization.

27491787532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624813368 (or 624813366 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 55.

The spelling of 27491787532 in words is "twenty-seven billion, four hundred ninety-one million, seven hundred eighty-seven thousand, five hundred thirty-two".