27809266957 has 8 divisors (see below), whose sum is σ = 28418173056. Its totient is φ = 27201078432.

The previous prime is 27809266943. The next prime is 27809266997. The reversal of 27809266957 is 75966290872.

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-27809266957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27809266895 and 27809266904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27809266997) 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, 100663 + ... + 256420.

It is an arithmetic number, because the mean of its divisors is an integer number (3552271632).

Almost surely, 2^27809266957 is an apocalyptic number.

It is an amenable number.

27809266957 is a deficient number, since it is larger than the sum of its proper divisors (608906099).

27809266957 is a wasteful number, since it uses less digits than its factorization.

27809266957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358787.

The product of its (nonzero) digits is 22861440, while the sum is 61.

The spelling of 27809266957 in words is "twenty-seven billion, eight hundred nine million, two hundred sixty-six thousand, nine hundred fifty-seven".