27197525045 has 18 divisors (see below), whose sum is σ = 32946589014. Its totient is φ = 21553576720.

The previous prime is 27197525011. The next prime is 27197525081. The reversal of 27197525045 is 54052579172.

It can be written as a sum of positive squares in only one way, i.e., 21758020036 + 5439505009 = 147506^2 + 73753^2 .

It is not a de Polignac number, because 27197525045 - 2⁸ = 27197524789 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 17 ways as a sum of consecutive naturals, for example, 48307934 + ... + 48308496.

Almost surely, 2^27197525045 is an apocalyptic number.

It is an amenable number.

27197525045 is a deficient number, since it is larger than the sum of its proper divisors (5749063969).

27197525045 is an frugal number, since it uses more digits than its factorization.

27197525045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 882000, while the sum is 47.

The spelling of 27197525045 in words is "twenty-seven billion, one hundred ninety-seven million, five hundred twenty-five thousand, forty-five".