347633221666 has 16 divisors (see below), whose sum is σ = 529999337088. Its totient is φ = 170989128000.

The previous prime is 347633221657. The next prime is 347633221667. The reversal of 347633221666 is 666122336743.

It is not an unprimeable number, because it can be changed into a prime (347633221667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5556775 + ... + 5618986.

It is an arithmetic number, because the mean of its divisors is an integer number (33124958568).

Almost surely, 2^347633221666 is an apocalyptic number.

347633221666 is a deficient number, since it is larger than the sum of its proper divisors (182366115422).

347633221666 is a wasteful number, since it uses less digits than its factorization.

347633221666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11176017.

The product of its digits is 3919104, while the sum is 49.

The spelling of 347633221666 in words is "three hundred forty-seven billion, six hundred thirty-three million, two hundred twenty-one thousand, six hundred sixty-six".