66571156122 has 16 divisors (see below), whose sum is σ = 133170860160. Its totient is φ = 22185627392.

The previous prime is 66571156117. The next prime is 66571156133. The reversal of 66571156122 is 22165117566.

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, 1159122 + ... + 1215197.

It is an arithmetic number, because the mean of its divisors is an integer number (8323178760).

Almost surely, 2^66571156122 is an apocalyptic number.

66571156122 is an abundant number, since it is smaller than the sum of its proper divisors (66599704038).

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

66571156122 is a wasteful number, since it uses less digits than its factorization.

66571156122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2378997.

The product of its digits is 151200, while the sum is 42.

The spelling of 66571156122 in words is "sixty-six billion, five hundred seventy-one million, one hundred fifty-six thousand, one hundred twenty-two".