191877045697 has 8 divisors (see below), whose sum is σ = 203196816000. Its totient is φ = 180560929344.

The previous prime is 191877045691. The next prime is 191877045707. The reversal of 191877045697 is 796540778191.

191877045697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 191877045697 - 2¹⁹ = 191876521409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191877045691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 804997 + ... + 1015762.

It is an arithmetic number, because the mean of its divisors is an integer number (25399602000).

Almost surely, 2^191877045697 is an apocalyptic number.

191877045697 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

191877045697 is a deficient number, since it is larger than the sum of its proper divisors (11319770303).

191877045697 is a wasteful number, since it uses less digits than its factorization.

191877045697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826975.

The product of its (nonzero) digits is 26671680, while the sum is 64.

The spelling of 191877045697 in words is "one hundred ninety-one billion, eight hundred seventy-seven million, forty-five thousand, six hundred ninety-seven".