27000081000061 has 16 divisors (see below), whose sum is σ = 29511545896000. Its totient is φ = 24550706492928.

The previous prime is 27000081000031. The next prime is 27000081000073. The reversal of 27000081000061 is 16000018000072.

It is a cyclic number.

It is not a de Polignac number, because 27000081000061 - 2¹³ = 27000080991869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27000081000031) 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, 51834490 + ... + 52352788.

It is an arithmetic number, because the mean of its divisors is an integer number (1844471618500).

Almost surely, 2^{27000081000061} is an apocalyptic number.

27000081000061 is the 3000005-th hex number.

It is an amenable number.

27000081000061 is a deficient number, since it is larger than the sum of its proper divisors (2511464895939).

27000081000061 is a wasteful number, since it uses less digits than its factorization.

27000081000061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578188.

The product of its (nonzero) digits is 672, while the sum is 25.

The spelling of 27000081000061 in words is "twenty-seven trillion, eighty-one million, sixty-one", and thus it is an aban number and an uban number.