2191403730079 has 8 divisors (see below), whose sum is σ = 2207377249280. Its totient is φ = 2175433182936.

The previous prime is 2191403730059. The next prime is 2191403730161. The reversal of 2191403730079 is 9700373041912.

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 2191403730079 - 2⁷ = 2191403729951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191403730029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747892 + ... + 2223094.

It is an arithmetic number, because the mean of its divisors is an integer number (275922156160).

Almost surely, 2^{2191403730079} is an apocalyptic number.

2191403730079 is a deficient number, since it is larger than the sum of its proper divisors (15973519201).

2191403730079 is a wasteful number, since it uses less digits than its factorization.

2191403730079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486029.

The product of its (nonzero) digits is 285768, while the sum is 46.

The spelling of 2191403730079 in words is "two trillion, one hundred ninety-one billion, four hundred three million, seven hundred thirty thousand, seventy-nine".