115521011040 has 96 divisors (see below), whose sum is σ = 363950175456. Its totient is φ = 30800609280.

The previous prime is 115521011033. The next prime is 115521011059. The reversal of 115521011040 is 40110125511.

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

It is a junction number, because it is equal to n+sod(n) for n = 115521010998 and 115521011016.

It is a congruent number.

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, 3671214 + ... + 3702546.

It is an arithmetic number, because the mean of its divisors is an integer number (3791147661).

Almost surely, 2^115521011040 is an apocalyptic number.

115521011040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115521011040 is an abundant number, since it is smaller than the sum of its proper divisors (248429164416).

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

115521011040 is a wasteful number, since it uses less digits than its factorization.

115521011040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39032 (or 39024 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 115521011040 its reverse (40110125511), we get a palindrome (155631136551).

The spelling of 115521011040 in words is "one hundred fifteen billion, five hundred twenty-one million, eleven thousand, forty".