66156634663466 has 8 divisors (see below), whose sum is σ = 99236152893504. Its totient is φ = 33077917032300.

The previous prime is 66156634663429. The next prime is 66156634663501. The reversal of 66156634663466 is 66436643665166.

66156634663466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×66156634663466² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66156634663396 and 66156634663405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199943090 + ... + 200273693.

It is an arithmetic number, because the mean of its divisors is an integer number (12404519111688).

Almost surely, 2^{66156634663466} is an apocalyptic number.

66156634663466 is a deficient number, since it is larger than the sum of its proper divisors (33079518230038).

66156634663466 is a wasteful number, since it uses less digits than its factorization.

66156634663466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400299436.

The product of its digits is 1209323520, while the sum is 68.

The spelling of 66156634663466 in words is "sixty-six trillion, one hundred fifty-six billion, six hundred thirty-four million, six hundred sixty-three thousand, four hundred sixty-six".