666616666012532 has 24 divisors (see below), whose sum is σ = 1173439660046976. Its totient is φ = 331348576812128.

The previous prime is 666616666012481. The next prime is 666616666012601. The reversal of 666616666012532 is 235210666616666.

It is a super-2 number, since 2×666616666012532² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41207408 + ... + 55057095.

It is an arithmetic number, because the mean of its divisors is an integer number (48893319168624).

Almost surely, 2^{666616666012532} is an apocalyptic number.

It is an amenable number.

666616666012532 is a deficient number, since it is larger than the sum of its proper divisors (506822994034444).

666616666012532 is a wasteful number, since it uses less digits than its factorization.

666616666012532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96274687 (or 96274685 counting only the distinct ones).

The product of its (nonzero) digits is 100776960, while the sum is 62.

The spelling of 666616666012532 in words is "six hundred sixty-six trillion, six hundred sixteen billion, six hundred sixty-six million, twelve thousand, five hundred thirty-two".