27151012691 has 8 divisors (see below), whose sum is σ = 29620479168. Its totient is φ = 24681745000.

The previous prime is 27151012663. The next prime is 27151012723. The reversal of 27151012691 is 19621015172.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-27151012691 is a prime.

It is a super-2 number, since 2×27151012691² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27151012601) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 510716 + ... + 561366.

It is an arithmetic number, because the mean of its divisors is an integer number (3702559896).

Almost surely, 2^27151012691 is an apocalyptic number.

27151012691 is a deficient number, since it is larger than the sum of its proper divisors (2469466477).

27151012691 is a wasteful number, since it uses less digits than its factorization.

27151012691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99393.

The product of its (nonzero) digits is 7560, while the sum is 35.

The spelling of 27151012691 in words is "twenty-seven billion, one hundred fifty-one million, twelve thousand, six hundred ninety-one".