11266061556 has 12 divisors (see below), whose sum is σ = 26287476992. Its totient is φ = 3755353848.

The previous prime is 11266061507. The next prime is 11266061557. The reversal of 11266061556 is 65516066211.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×11266061556² (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 (11266061557) 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, 469419220 + ... + 469419243.

Almost surely, 2^11266061556 is an apocalyptic number.

It is an amenable number.

11266061556 is an abundant number, since it is smaller than the sum of its proper divisors (15021415436).

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

11266061556 is a wasteful number, since it uses less digits than its factorization.

11266061556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938838470 (or 938838468 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 11266061556 in words is "eleven billion, two hundred sixty-six million, sixty-one thousand, five hundred fifty-six".