27766339434261 has 24 divisors (see below), whose sum is σ = 40488891653184. Its totient is φ = 18335311718400.

The previous prime is 27766339434259. The next prime is 27766339434271. The reversal of 27766339434261 is 16243493366772.

27766339434261 is a `hidden beast` number, since 2 + 7 + 7 + 6 + 6 + 339 + 4 + 34 + 261 = 666.

It is not a de Polignac number, because 27766339434261 - 2¹ = 27766339434259 is a prime.

It is a super-2 number, since 2×27766339434261² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27766339434221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28968556 + ... + 29911701.

It is an arithmetic number, because the mean of its divisors is an integer number (1687037152216).

Almost surely, 2^{27766339434261} is an apocalyptic number.

It is an amenable number.

27766339434261 is a deficient number, since it is larger than the sum of its proper divisors (12722552218923).

27766339434261 is a wasteful number, since it uses less digits than its factorization.

27766339434261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58880761 (or 58880758 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 63.

The spelling of 27766339434261 in words is "twenty-seven trillion, seven hundred sixty-six billion, three hundred thirty-nine million, four hundred thirty-four thousand, two hundred sixty-one".