11534643552 has 48 divisors (see below), whose sum is σ = 30849744240. Its totient is φ = 3772334592.

The previous prime is 11534643539. The next prime is 11534643577. The reversal of 11534643552 is 25534643511.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 11534643552.

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, 1128427 + ... + 1138602.

It is an arithmetic number, because the mean of its divisors is an integer number (642703005).

Almost surely, 2^11534643552 is an apocalyptic number.

11534643552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11534643552 is an abundant number, since it is smaller than the sum of its proper divisors (19315100688).

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

11534643552 is a wasteful number, since it uses less digits than its factorization.

11534643552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267095 (or 2267087 counting only the distinct ones).

The product of its digits is 216000, while the sum is 39.

The spelling of 11534643552 in words is "eleven billion, five hundred thirty-four million, six hundred forty-three thousand, five hundred fifty-two".