66412865154 has 8 divisors (see below), whose sum is σ = 132825730320. Its totient is φ = 22137621716.

The previous prime is 66412865153. The next prime is 66412865173. The reversal of 66412865154 is 45156821466.

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

66412865154 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (66412865153) 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 3 ways as a sum of consecutive naturals, for example, 5534405424 + ... + 5534405435.

It is an arithmetic number, because the mean of its divisors is an integer number (16603216290).

Almost surely, 2^66412865154 is an apocalyptic number.

66412865154 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66412865154 is a wasteful number, since it uses less digits than its factorization.

66412865154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11068810864.

The product of its digits is 1382400, while the sum is 48.

The spelling of 66412865154 in words is "sixty-six billion, four hundred twelve million, eight hundred sixty-five thousand, one hundred fifty-four".