27128701955 has 4 divisors (see below), whose sum is σ = 32554442352. Its totient is φ = 21702961560.

The previous prime is 27128701931. The next prime is 27128701967. The reversal of 27128701955 is 55910782172.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 27128701955 - 2¹² = 27128697859 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2712870191 + ... + 2712870200.

It is an arithmetic number, because the mean of its divisors is an integer number (8138610588).

Almost surely, 2^27128701955 is an apocalyptic number.

27128701955 is a deficient number, since it is larger than the sum of its proper divisors (5425740397).

27128701955 is an equidigital number, since it uses as much as digits as its factorization.

27128701955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5425740396.

The product of its (nonzero) digits is 352800, while the sum is 47.

The spelling of 27128701955 in words is "twenty-seven billion, one hundred twenty-eight million, seven hundred one thousand, nine hundred fifty-five".