66590608149 has 48 divisors (see below), whose sum is σ = 109813983552. Its totient is φ = 38520728064.

The previous prime is 66590608129. The next prime is 66590608181. The reversal of 66590608149 is 94180609566.

It is a happy number.

66590608149 is a `hidden beast` number, since 6 + 6 + 590 + 6 + 0 + 8 + 1 + 49 = 666.

It is not a de Polignac number, because 66590608149 - 2²¹ = 66588510997 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 66590608095 and 66590608104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66590608129) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1624662 + ... + 1665144.

It is an arithmetic number, because the mean of its divisors is an integer number (2287791324).

Almost surely, 2^66590608149 is an apocalyptic number.

It is an amenable number.

66590608149 is a deficient number, since it is larger than the sum of its proper divisors (43223375403).

66590608149 is a wasteful number, since it uses less digits than its factorization.

66590608149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41346 (or 41343 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 66590608149 in words is "sixty-six billion, five hundred ninety million, six hundred eight thousand, one hundred forty-nine".