27215157961 has 8 divisors (see below), whose sum is σ = 27320400800. Its totient is φ = 27110023488.

The previous prime is 27215157947. The next prime is 27215157971. The reversal of 27215157961 is 16975151272.

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

It is a cyclic number.

It is not a de Polignac number, because 27215157961 - 2⁹ = 27215157449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27215157971) 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, 495505 + ... + 547681.

It is an arithmetic number, because the mean of its divisors is an integer number (3415050100).

Almost surely, 2^27215157961 is an apocalyptic number.

It is an amenable number.

27215157961 is a deficient number, since it is larger than the sum of its proper divisors (105242839).

27215157961 is a wasteful number, since it uses less digits than its factorization.

27215157961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54183.

The product of its digits is 264600, while the sum is 46.

The spelling of 27215157961 in words is "twenty-seven billion, two hundred fifteen million, one hundred fifty-seven thousand, nine hundred sixty-one".