191404708066 has 64 divisors (see below), whose sum is σ = 346583784960. Its totient is φ = 78101487360.

The previous prime is 191404708049. The next prime is 191404708069. The reversal of 191404708066 is 660807404191.

It is not an unprimeable number, because it can be changed into a prime (191404708069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36050220 + ... + 36055528.

It is an arithmetic number, because the mean of its divisors is an integer number (5415371640).

Almost surely, 2^191404708066 is an apocalyptic number.

191404708066 is a deficient number, since it is larger than the sum of its proper divisors (155179076894).

191404708066 is a wasteful number, since it uses less digits than its factorization.

191404708066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8779.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 191404708066 in words is "one hundred ninety-one billion, four hundred four million, seven hundred eight thousand, sixty-six".