11545521042 has 16 divisors (see below), whose sum is σ = 25190227872. Its totient is φ = 3498642720.

The previous prime is 11545520969. The next prime is 11545521061. The reversal of 11545521042 is 24012554511.

It is a super-2 number, since 2×11545521042² (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, 87466003 + ... + 87466134.

It is an arithmetic number, because the mean of its divisors is an integer number (1574389242).

Almost surely, 2^11545521042 is an apocalyptic number.

11545521042 is an abundant number, since it is smaller than the sum of its proper divisors (13644706830).

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

11545521042 is a wasteful number, since it uses less digits than its factorization.

11545521042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174932153.

The product of its (nonzero) digits is 8000, while the sum is 30.

The spelling of 11545521042 in words is "eleven billion, five hundred forty-five million, five hundred twenty-one thousand, forty-two".