11057280697 has 4 divisors (see below), whose sum is σ = 11057930640. Its totient is φ = 11056630756.

The previous prime is 11057280691. The next prime is 11057280721. The reversal of 11057280697 is 79608275011.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79608275011 = 83431 ⋅954181.

It is a cyclic number.

It is not a de Polignac number, because 11057280697 - 2²³ = 11048892089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11057280691) 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, 298747 + ... + 333712.

It is an arithmetic number, because the mean of its divisors is an integer number (2764482660).

Almost surely, 2^11057280697 is an apocalyptic number.

It is an amenable number.

11057280697 is a deficient number, since it is larger than the sum of its proper divisors (649943).

11057280697 is an equidigital number, since it uses as much as digits as its factorization.

11057280697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649942.

The product of its (nonzero) digits is 211680, while the sum is 46.

The spelling of 11057280697 in words is "eleven billion, fifty-seven million, two hundred eighty thousand, six hundred ninety-seven".