27153997215 has 32 divisors (see below), whose sum is σ = 45132982272. Its totient is φ = 13929888000.

The previous prime is 27153997181. The next prime is 27153997259. The reversal of 27153997215 is 51279935172.

It is a happy number.

It is not a de Polignac number, because 27153997215 - 2¹⁷ = 27153866143 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 267271 + ... + 354600.

It is an arithmetic number, because the mean of its divisors is an integer number (1410405696).

Almost surely, 2^27153997215 is an apocalyptic number.

27153997215 is a deficient number, since it is larger than the sum of its proper divisors (17978985057).

27153997215 is a wasteful number, since it uses less digits than its factorization.

27153997215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621991.

The product of its digits is 1190700, while the sum is 51.

The spelling of 27153997215 in words is "twenty-seven billion, one hundred fifty-three million, nine hundred ninety-seven thousand, two hundred fifteen".