27145064831 has 8 divisors (see below), whose sum is σ = 27259774080. Its totient is φ = 27030488472.

The previous prime is 27145064777. The next prime is 27145064833. The reversal of 27145064831 is 13846054172.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27145064831 is a prime.

It is a super-2 number, since 2×27145064831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27145064833) 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, 387350 + ... + 452028.

It is an arithmetic number, because the mean of its divisors is an integer number (3407471760).

Almost surely, 2^27145064831 is an apocalyptic number.

27145064831 is a deficient number, since it is larger than the sum of its proper divisors (114709249).

27145064831 is a wasteful number, since it uses less digits than its factorization.

27145064831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66445.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 27145064831 in words is "twenty-seven billion, one hundred forty-five million, sixty-four thousand, eight hundred thirty-one".