27131322646 has 16 divisors (see below), whose sum is σ = 40841645904. Its totient is φ = 13517472384.

The previous prime is 27131322643. The next prime is 27131322661. The reversal of 27131322646 is 64622313172.

It is a super-2 number, since 2×27131322646² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27131322643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2274570 + ... + 2286466.

It is an arithmetic number, because the mean of its divisors is an integer number (2552602869).

Almost surely, 2^27131322646 is an apocalyptic number.

27131322646 is a deficient number, since it is larger than the sum of its proper divisors (13710323258).

27131322646 is a wasteful number, since it uses less digits than its factorization.

27131322646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15855.

The product of its digits is 72576, while the sum is 37.

The spelling of 27131322646 in words is "twenty-seven billion, one hundred thirty-one million, three hundred twenty-two thousand, six hundred forty-six".