11557257366 has 16 divisors (see below), whose sum is σ = 23678283888. Its totient is φ = 3758457600.

The previous prime is 11557257337. The next prime is 11557257367. The reversal of 11557257366 is 66375275511.

It is a super-2 number, since 2×11557257366² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11557257367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23490115 + ... + 23490606.

It is an arithmetic number, because the mean of its divisors is an integer number (1479892743).

Almost surely, 2^11557257366 is an apocalyptic number.

11557257366 is an abundant number, since it is smaller than the sum of its proper divisors (12121026522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11557257366 is a wasteful number, since it uses less digits than its factorization.

11557257366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46980767.

The product of its digits is 1323000, while the sum is 48.

The spelling of 11557257366 in words is "eleven billion, five hundred fifty-seven million, two hundred fifty-seven thousand, three hundred sixty-six".