11211075707657 has 4 divisors (see below), whose sum is σ = 12812657951616. Its totient is φ = 9609493463700.

The previous prime is 11211075707653. The next prime is 11211075707669. The reversal of 11211075707657 is 75670757011211.

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 not a de Polignac number, because 11211075707657 - 2² = 11211075707653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211075707653) 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, 800791121969 + ... + 800791121982.

It is an arithmetic number, because the mean of its divisors is an integer number (3203164487904).

Almost surely, 2^{11211075707657} is an apocalyptic number.

It is an amenable number.

11211075707657 is a deficient number, since it is larger than the sum of its proper divisors (1601582243959).

11211075707657 is an equidigital number, since it uses as much as digits as its factorization.

11211075707657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601582243958.

The product of its (nonzero) digits is 720300, while the sum is 50.

The spelling of 11211075707657 in words is "eleven trillion, two hundred eleven billion, seventy-five million, seven hundred seven thousand, six hundred fifty-seven".