27554531641 has 16 divisors (see below), whose sum is σ = 33963439104. Its totient is φ = 21769136064.

The previous prime is 27554531639. The next prime is 27554531663. The reversal of 27554531641 is 14613545572.

It is not a de Polignac number, because 27554531641 - 2¹ = 27554531639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27554531681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162025 + ... + 285238.

It is an arithmetic number, because the mean of its divisors is an integer number (2122714944).

Almost surely, 2^27554531641 is an apocalyptic number.

It is an amenable number.

27554531641 is a deficient number, since it is larger than the sum of its proper divisors (6408907463).

27554531641 is a wasteful number, since it uses less digits than its factorization.

27554531641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447960.

The product of its digits is 504000, while the sum is 43.

The spelling of 27554531641 in words is "twenty-seven billion, five hundred fifty-four million, five hundred thirty-one thousand, six hundred forty-one".