11545011556 has 24 divisors (see below), whose sum is σ = 21760866680. Its totient is φ = 5327741952.

The previous prime is 11545011547. The next prime is 11545011589. The reversal of 11545011556 is 65511054511.

It can be written as a sum of positive squares in 4 ways, for example, as 1437926400 + 10107085156 = 37920^2 + 100534^2 .

It is a super-2 number, since 2×11545011556² (a number of 21 digits) contains 22 as substring.

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, 648340 + ... + 665908.

Almost surely, 2^11545011556 is an apocalyptic number.

It is an amenable number.

11545011556 is a deficient number, since it is larger than the sum of its proper divisors (10215855124).

11545011556 is a wasteful number, since it uses less digits than its factorization.

11545011556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30223 (or 30221 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 34.

The spelling of 11545011556 in words is "eleven billion, five hundred forty-five million, eleven thousand, five hundred fifty-six".