11555145120 has 96 divisors (see below), whose sum is σ = 37653880320. Its totient is φ = 2975114240.

The previous prime is 11555145101. The next prime is 11555145137. The reversal of 11555145120 is 2154155511.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401136 + ... + 428975.

It is an arithmetic number, because the mean of its divisors is an integer number (392227920).

Almost surely, 2^11555145120 is an apocalyptic number.

11555145120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11555145120 is an abundant number, since it is smaller than the sum of its proper divisors (26098735200).

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

11555145120 is a wasteful number, since it uses less digits than its factorization.

11555145120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830158 (or 830150 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 30.

The spelling of 11555145120 in words is "eleven billion, five hundred fifty-five million, one hundred forty-five thousand, one hundred twenty".