66268082238 has 16 divisors (see below), whose sum is σ = 139511752320. Its totient is φ = 20926762776.

The previous prime is 66268082203. The next prime is 66268082261. The reversal of 66268082238 is 83228086266.

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, 290649370 + ... + 290649597.

It is an arithmetic number, because the mean of its divisors is an integer number (8719484520).

Almost surely, 2^66268082238 is an apocalyptic number.

66268082238 is an abundant number, since it is smaller than the sum of its proper divisors (73243670082).

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

66268082238 is a wasteful number, since it uses less digits than its factorization.

66268082238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581298991.

The product of its (nonzero) digits is 2654208, while the sum is 51.

The spelling of 66268082238 in words is "sixty-six billion, two hundred sixty-eight million, eighty-two thousand, two hundred thirty-eight".