27598026040661 has 4 divisors (see below), whose sum is σ = 27601497061824. Its totient is φ = 27594555019500.

The previous prime is 27598026040649. The next prime is 27598026040667. The reversal of 27598026040661 is 16604062089572.

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 27598026040661 - 2²² = 27598021846357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27598026040597 and 27598026040606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27598026040667) 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, 1735498655 + ... + 1735514556.

It is an arithmetic number, because the mean of its divisors is an integer number (6900374265456).

Almost surely, 2^{27598026040661} is an apocalyptic number.

It is an amenable number.

27598026040661 is a deficient number, since it is larger than the sum of its proper divisors (3471021163).

27598026040661 is an equidigital number, since it uses as much as digits as its factorization.

27598026040661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3471021162.

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 27598026040661 in words is "twenty-seven trillion, five hundred ninety-eight billion, twenty-six million, forty thousand, six hundred sixty-one".