27761560655 has 16 divisors (see below), whose sum is σ = 34467638400. Its totient is φ = 21440294400.

The previous prime is 27761560633. The next prime is 27761560663. The reversal of 27761560655 is 55606516772.

It is not a de Polignac number, because 27761560655 - 2¹⁶ = 27761495119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1790426 + ... + 1805864.

It is an arithmetic number, because the mean of its divisors is an integer number (2154227400).

Almost surely, 2^27761560655 is an apocalyptic number.

27761560655 is a deficient number, since it is larger than the sum of its proper divisors (6706077745).

27761560655 is a wasteful number, since it uses less digits than its factorization.

27761560655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27874.

The product of its (nonzero) digits is 2646000, while the sum is 50.

The spelling of 27761560655 in words is "twenty-seven billion, seven hundred sixty-one million, five hundred sixty thousand, six hundred fifty-five".