11420426566 has 16 divisors (see below), whose sum is σ = 18142477200. Its totient is φ = 5373088000.

The previous prime is 11420426557. The next prime is 11420426573. The reversal of 11420426566 is 66562402411.

It is a super-2 number, since 2×11420426566² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121941 + ... + 194191.

It is an arithmetic number, because the mean of its divisors is an integer number (1133904825).

Almost surely, 2^11420426566 is an apocalyptic number.

11420426566 is a deficient number, since it is larger than the sum of its proper divisors (6722050634).

11420426566 is a wasteful number, since it uses less digits than its factorization.

11420426566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76919.

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 11420426566 its reverse (66562402411), we get a palindrome (77982828977).

The spelling of 11420426566 in words is "eleven billion, four hundred twenty million, four hundred twenty-six thousand, five hundred sixty-six".