27525770997 has 4 divisors (see below), whose sum is σ = 36701028000. Its totient is φ = 18350513996.

The previous prime is 27525770989. The next prime is 27525771113. The reversal of 27525770997 is 79907752572.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27525770997 - 2³ = 27525770989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27525770997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27525771997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4587628497 + ... + 4587628502.

It is an arithmetic number, because the mean of its divisors is an integer number (9175257000).

Almost surely, 2^27525770997 is an apocalyptic number.

It is an amenable number.

27525770997 is a deficient number, since it is larger than the sum of its proper divisors (9175257003).

27525770997 is an equidigital number, since it uses as much as digits as its factorization.

27525770997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9175257002.

The product of its (nonzero) digits is 19448100, while the sum is 60.

The spelling of 27525770997 in words is "twenty-seven billion, five hundred twenty-five million, seven hundred seventy thousand, nine hundred ninety-seven".