665377848027 has 32 divisors (see below), whose sum is σ = 1002116102400. Its totient is φ = 436277876544.

The previous prime is 665377847989. The next prime is 665377848101. The reversal of 665377848027 is 720848773566.

665377848027 is a `hidden beast` number, since 6 + 6 + 537 + 78 + 4 + 8 + 0 + 27 = 666.

It is not a de Polignac number, because 665377848027 - 2¹² = 665377843931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (665377848727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 426898 + ... + 1230039.

It is an arithmetic number, because the mean of its divisors is an integer number (31316128200).

Almost surely, 2^665377848027 is an apocalyptic number.

665377848027 is a deficient number, since it is larger than the sum of its proper divisors (336738254373).

665377848027 is a wasteful number, since it uses less digits than its factorization.

665377848027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657192 (or 1657186 counting only the distinct ones).

The product of its (nonzero) digits is 94832640, while the sum is 63.

The spelling of 665377848027 in words is "six hundred sixty-five billion, three hundred seventy-seven million, eight hundred forty-eight thousand, twenty-seven".