27585453575661 has 32 divisors (see below), whose sum is σ = 37698029268480. Its totient is φ = 17934514515456.

The previous prime is 27585453575653. The next prime is 27585453575663. The reversal of 27585453575661 is 16657535458572.

It is not a de Polignac number, because 27585453575661 - 2³ = 27585453575653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27585453575663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43969995 + ... + 44592951.

It is an arithmetic number, because the mean of its divisors is an integer number (1178063414640).

Almost surely, 2^{27585453575661} is an apocalyptic number.

It is an amenable number.

27585453575661 is a deficient number, since it is larger than the sum of its proper divisors (10112575692819).

27585453575661 is a wasteful number, since it uses less digits than its factorization.

27585453575661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624133.

The product of its digits is 1058400000, while the sum is 69.

The spelling of 27585453575661 in words is "twenty-seven trillion, five hundred eighty-five billion, four hundred fifty-three million, five hundred seventy-five thousand, six hundred sixty-one".