1766192795491 has 4 divisors (see below), whose sum is σ = 1788549666400. Its totient is φ = 1743835924584.

The previous prime is 1766192795489. The next prime is 1766192795531. The reversal of 1766192795491 is 1945972916671.

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

It is a cyclic number.

It is not a de Polignac number, because 1766192795491 - 2¹ = 1766192795489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1766192775491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11178435336 + ... + 11178435493.

It is an arithmetic number, because the mean of its divisors is an integer number (447137416600).

Almost surely, 2^{1766192795491} is an apocalyptic number.

1766192795491 is a deficient number, since it is larger than the sum of its proper divisors (22356870909).

1766192795491 is an equidigital number, since it uses as much as digits as its factorization.

1766192795491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22356870908.

The product of its digits is 51438240, while the sum is 67.

The spelling of 1766192795491 in words is "one trillion, seven hundred sixty-six billion, one hundred ninety-two million, seven hundred ninety-five thousand, four hundred ninety-one".