27140553497 has 4 divisors (see below), whose sum is σ = 27140889780. Its totient is φ = 27140217216.

The previous prime is 27140553493. The next prime is 27140553551. The reversal of 27140553497 is 79435504172.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 20046029056 + 7094524441 = 141584^2 + 84229^2 .

It is a cyclic number.

It is not a de Polignac number, because 27140553497 - 2² = 27140553493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27140553493) 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, 33629 + ... + 235397.

It is an arithmetic number, because the mean of its divisors is an integer number (6785222445).

It is a Poulet number, since it divides 2^27140553496-1.

Almost surely, 2^27140553497 is an apocalyptic number.

27140553497 is the 134513-rd pentagonal number.

It is an amenable number.

27140553497 is a deficient number, since it is larger than the sum of its proper divisors (336283).

27140553497 is a wasteful number, since it uses less digits than its factorization.

27140553497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336282.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 27140553497 in words is "twenty-seven billion, one hundred forty million, five hundred fifty-three thousand, four hundred ninety-seven".