115628521540 has 48 divisors (see below), whose sum is σ = 292114166400. Its totient is φ = 37557533952.

The previous prime is 115628521507. The next prime is 115628521627. The reversal of 115628521540 is 45125826511.

It is a super-3 number, since 3×115628521540³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115628521493 and 115628521502.

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, 21732025 + ... + 21737344.

It is an arithmetic number, because the mean of its divisors is an integer number (6085711800).

Almost surely, 2^115628521540 is an apocalyptic number.

115628521540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115628521540 is an abundant number, since it is smaller than the sum of its proper divisors (176485644860).

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

115628521540 is a wasteful number, since it uses less digits than its factorization.

115628521540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43469404 (or 43469402 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 40.

The spelling of 115628521540 in words is "one hundred fifteen billion, six hundred twenty-eight million, five hundred twenty-one thousand, five hundred forty".