27197370985 has 16 divisors (see below), whose sum is σ = 32945766480. Its totient is φ = 21552065280.

The previous prime is 27197370983. The next prime is 27197371007. The reversal of 27197370985 is 58907379172.

It can be written as a sum of positive squares in 8 ways, for example, as 592825104 + 26604545881 = 24348^2 + 163109^2 .

It is not a de Polignac number, because 27197370985 - 2¹ = 27197370983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27197370983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3168159 + ... + 3176731.

It is an arithmetic number, because the mean of its divisors is an integer number (2059110405).

Almost surely, 2^27197370985 is an apocalyptic number.

It is an amenable number.

27197370985 is a deficient number, since it is larger than the sum of its proper divisors (5748395495).

27197370985 is a wasteful number, since it uses less digits than its factorization.

27197370985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14508.

The product of its (nonzero) digits is 6667920, while the sum is 58.

The spelling of 27197370985 in words is "twenty-seven billion, one hundred ninety-seven million, three hundred seventy thousand, nine hundred eighty-five".