666546363764 has 24 divisors (see below), whose sum is σ = 1186284261120. Its totient is φ = 327608553024.

The previous prime is 666546363737. The next prime is 666546363767. The reversal of 666546363764 is 467363645666.

It is a super-2 number, since 2×666546363764² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 666546363697 and 666546363706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666546363767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5887112 + ... + 5999264.

It is an arithmetic number, because the mean of its divisors is an integer number (49428510880).

Almost surely, 2^666546363764 is an apocalyptic number.

It is an amenable number.

666546363764 is a deficient number, since it is larger than the sum of its proper divisors (519737897356).

666546363764 is a wasteful number, since it uses less digits than its factorization.

666546363764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137399 (or 137397 counting only the distinct ones).

The product of its digits is 235146240, while the sum is 62.

The spelling of 666546363764 in words is "six hundred sixty-six billion, five hundred forty-six million, three hundred sixty-three thousand, seven hundred sixty-four".