2196091306957 has 4 divisors (see below), whose sum is σ = 2199992002560. Its totient is φ = 2192190611356.

The previous prime is 2196091306933. The next prime is 2196091307017. The reversal of 2196091306957 is 7596031906912.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2196091306957 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2196091306657) 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, 1950346957 + ... + 1950348082.

It is an arithmetic number, because the mean of its divisors is an integer number (549998000640).

Almost surely, 2^{2196091306957} is an apocalyptic number.

It is an amenable number.

2196091306957 is a deficient number, since it is larger than the sum of its proper divisors (3900695603).

2196091306957 is an equidigital number, since it uses as much as digits as its factorization.

2196091306957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3900695602.

The product of its (nonzero) digits is 5511240, while the sum is 58.

The spelling of 2196091306957 in words is "two trillion, one hundred ninety-six billion, ninety-one million, three hundred six thousand, nine hundred fifty-seven".