27215425655 has 8 divisors (see below), whose sum is σ = 35627466384. Its totient is φ = 19793036800.

The previous prime is 27215425639. The next prime is 27215425687. The reversal of 27215425655 is 55652451272.

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

It is not a de Polignac number, because 27215425655 - 2⁴ = 27215425639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247412906 + ... + 247413015.

It is an arithmetic number, because the mean of its divisors is an integer number (4453433298).

Almost surely, 2^27215425655 is an apocalyptic number.

27215425655 is a deficient number, since it is larger than the sum of its proper divisors (8412040729).

27215425655 is a wasteful number, since it uses less digits than its factorization.

27215425655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494825937.

The product of its digits is 840000, while the sum is 44.

The spelling of 27215425655 in words is "twenty-seven billion, two hundred fifteen million, four hundred twenty-five thousand, six hundred fifty-five".