2191627737497 has 8 divisors (see below), whose sum is σ = 2414078921280. Its totient is φ = 1973045270160.

The previous prime is 2191627737493. The next prime is 2191627737521. The reversal of 2191627737497 is 7947377261912.

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 2191627737497 - 2² = 2191627737493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2191627737493) 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 7 ways as a sum of consecutive naturals, for example, 967177922 + ... + 967180187.

It is an arithmetic number, because the mean of its divisors is an integer number (301759865160).

Almost surely, 2^{2191627737497} is an apocalyptic number.

It is an amenable number.

2191627737497 is a deficient number, since it is larger than the sum of its proper divisors (222451183783).

2191627737497 is a wasteful number, since it uses less digits than its factorization.

2191627737497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934358223.

The product of its digits is 56010528, while the sum is 65.

The spelling of 2191627737497 in words is "two trillion, one hundred ninety-one billion, six hundred twenty-seven million, seven hundred thirty-seven thousand, four hundred ninety-seven".