27955155155897 has 8 divisors (see below), whose sum is σ = 28429971857280. Its totient is φ = 27480371805040.

The previous prime is 27955155155881. The next prime is 27955155155899. The reversal of 27955155155897 is 79855155155972.

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 27955155155897 - 2⁴ = 27955155155881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27955155155899) 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, 6644054 + ... + 10002687.

It is an arithmetic number, because the mean of its divisors is an integer number (3553746482160).

Almost surely, 2^{27955155155897} is an apocalyptic number.

It is an amenable number.

27955155155897 is a deficient number, since it is larger than the sum of its proper divisors (474816701383).

27955155155897 is a wasteful number, since it uses less digits than its factorization.

27955155155897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16675263.

The product of its digits is 992250000, while the sum is 74.

The spelling of 27955155155897 in words is "twenty-seven trillion, nine hundred fifty-five billion, one hundred fifty-five million, one hundred fifty-five thousand, eight hundred ninety-seven".