191012795067 has 4 divisors (see below), whose sum is σ = 254683726760. Its totient is φ = 127341863376.

The previous prime is 191012795041. The next prime is 191012795111. The reversal of 191012795067 is 760597210191.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 191012795067 - 2⁶ = 191012795003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191012795167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31835465842 + ... + 31835465847.

It is an arithmetic number, because the mean of its divisors is an integer number (63670931690).

Almost surely, 2^191012795067 is an apocalyptic number.

191012795067 is a deficient number, since it is larger than the sum of its proper divisors (63670931693).

191012795067 is an equidigital number, since it uses as much as digits as its factorization.

191012795067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63670931692.

The product of its (nonzero) digits is 238140, while the sum is 48.

The spelling of 191012795067 in words is "one hundred ninety-one billion, twelve million, seven hundred ninety-five thousand, sixty-seven".