2015531425540 has 24 divisors (see below), whose sum is σ = 4232646012672. Its totient is φ = 806206852320.

The previous prime is 2015531425511. The next prime is 2015531425561. The reversal of 2015531425540 is 455241355102.

It is a self number, because there is not a number n which added to its sum of digits gives 2015531425540.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3604195 + ... + 4125685.

It is an arithmetic number, because the mean of its divisors is an integer number (176360250528).

Almost surely, 2^{2015531425540} is an apocalyptic number.

2015531425540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2015531425540 is an abundant number, since it is smaller than the sum of its proper divisors (2217114587132).

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

2015531425540 is a wasteful number, since it uses less digits than its factorization.

2015531425540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714747 (or 714745 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 2015531425540 in words is "two trillion, fifteen billion, five hundred thirty-one million, four hundred twenty-five thousand, five hundred forty".