2146217315657 has 4 divisors (see below), whose sum is σ = 2146220366976. Its totient is φ = 2146214264340.

The previous prime is 2146217315591. The next prime is 2146217315663. The reversal of 2146217315657 is 7565137126412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2146217315657 - 2⁸ = 2146217315401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2146213315657) 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, 123932 + ... + 2075522.

It is an arithmetic number, because the mean of its divisors is an integer number (536555091744).

Almost surely, 2^{2146217315657} is an apocalyptic number.

It is an amenable number.

2146217315657 is a deficient number, since it is larger than the sum of its proper divisors (3051319).

2146217315657 is a wasteful number, since it uses less digits than its factorization.

2146217315657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3051318.

The product of its digits is 2116800, while the sum is 50.

The spelling of 2146217315657 in words is "two trillion, one hundred forty-six billion, two hundred seventeen million, three hundred fifteen thousand, six hundred fifty-seven".