66690226226 has 16 divisors (see below), whose sum is σ = 108055848768. Its totient is φ = 30687109200.

The previous prime is 66690226193. The next prime is 66690226243. The reversal of 66690226226 is 62262209666.

It is a super-3 number, since 3×66690226226³ (a number of 33 digits) contains 333 as substring.

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, 3866030 + ... + 3883241.

It is an arithmetic number, because the mean of its divisors is an integer number (6753490548).

Almost surely, 2^66690226226 is an apocalyptic number.

66690226226 is a deficient number, since it is larger than the sum of its proper divisors (41365622542).

66690226226 is a wasteful number, since it uses less digits than its factorization.

66690226226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7749617.

The product of its (nonzero) digits is 1119744, while the sum is 47.

The spelling of 66690226226 in words is "sixty-six billion, six hundred ninety million, two hundred twenty-six thousand, two hundred twenty-six".