11115661552 has 20 divisors (see below), whose sum is σ = 21569196616. Its totient is φ = 5549417280.

The previous prime is 11115661541. The next prime is 11115661573. The reversal of 11115661552 is 25516651111.

It is a super-2 number, since 2×11115661552² (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 3 ways as a sum of consecutive naturals, for example, 514938 + ... + 536089.

Almost surely, 2^11115661552 is an apocalyptic number.

It is an amenable number.

11115661552 is a deficient number, since it is larger than the sum of its proper divisors (10453535064).

11115661552 is a wasteful number, since it uses less digits than its factorization.

11115661552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051696 (or 1051690 counting only the distinct ones).

The product of its digits is 9000, while the sum is 34.

The spelling of 11115661552 in words is "eleven billion, one hundred fifteen million, six hundred sixty-one thousand, five hundred fifty-two".