27731770474764 has 12 divisors (see below), whose sum is σ = 64707464441144. Its totient is φ = 9243923491584.

The previous prime is 27731770474763. The next prime is 27731770474783. The reversal of 27731770474764 is 46747407713772.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×27731770474764³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27731770474695 and 27731770474704.

It is not an unprimeable number, because it can be changed into a prime (27731770474763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1155490436437 + ... + 1155490436460.

Almost surely, 2^{27731770474764} is an apocalyptic number.

It is an amenable number.

27731770474764 is an abundant number, since it is smaller than the sum of its proper divisors (36975693966380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27731770474764 is a wasteful number, since it uses less digits than its factorization.

27731770474764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310980872904 (or 2310980872902 counting only the distinct ones).

The product of its (nonzero) digits is 271063296, while the sum is 66.

The spelling of 27731770474764 in words is "twenty-seven trillion, seven hundred thirty-one billion, seven hundred seventy million, four hundred seventy-four thousand, seven hundred sixty-four".