27597951649 has 8 divisors (see below), whose sum is σ = 29057343840. Its totient is φ = 26139246336.

The previous prime is 27597951629. The next prime is 27597951659. The reversal of 27597951649 is 94615979572.

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-27597951649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27597951629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88192 + ... + 250945.

It is an arithmetic number, because the mean of its divisors is an integer number (3632167980).

Almost surely, 2^27597951649 is an apocalyptic number.

It is an amenable number.

27597951649 is a deficient number, since it is larger than the sum of its proper divisors (1459392191).

27597951649 is a wasteful number, since it uses less digits than its factorization.

27597951649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343439.

The product of its digits is 42865200, while the sum is 64.

The spelling of 27597951649 in words is "twenty-seven billion, five hundred ninety-seven million, nine hundred fifty-one thousand, six hundred forty-nine".