134756221666 has 16 divisors (see below), whose sum is σ = 221742087840. Its totient is φ = 60910631680.

The previous prime is 134756221609. The next prime is 134756221679. The reversal of 134756221666 is 666122657431.

It is a super-2 number, since 2×134756221666² (a number of 23 digits) contains 22 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, 17105791 + ... + 17113666.

It is an arithmetic number, because the mean of its divisors is an integer number (13858880490).

Almost surely, 2^134756221666 is an apocalyptic number.

134756221666 is a deficient number, since it is larger than the sum of its proper divisors (86985866174).

134756221666 is a wasteful number, since it uses less digits than its factorization.

134756221666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34219649.

The product of its digits is 2177280, while the sum is 49.

The spelling of 134756221666 in words is "one hundred thirty-four billion, seven hundred fifty-six million, two hundred twenty-one thousand, six hundred sixty-six".