66746535501368 has 32 divisors (see below), whose sum is σ = 125865022867200. Its totient is φ = 33182577132768.

The previous prime is 66746535501323. The next prime is 66746535501391. The reversal of 66746535501368 is 86310553564766.

It is a happy number.

It is a super-2 number, since 2×66746535501368² (a number of 28 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, 8223455 + ... + 14181617.

It is an arithmetic number, because the mean of its divisors is an integer number (3933281964600).

Almost surely, 2^{66746535501368} is an apocalyptic number.

It is an amenable number.

66746535501368 is a deficient number, since it is larger than the sum of its proper divisors (59118487365832).

66746535501368 is a wasteful number, since it uses less digits than its factorization.

66746535501368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5966171 (or 5966167 counting only the distinct ones).

The product of its (nonzero) digits is 326592000, while the sum is 65.

The spelling of 66746535501368 in words is "sixty-six trillion, seven hundred forty-six billion, five hundred thirty-five million, five hundred one thousand, three hundred sixty-eight".