12015500250540 has 48 divisors (see below), whose sum is σ = 33694453013760. Its totient is φ = 3199271275200.

The previous prime is 12015500250473. The next prime is 12015500250601. The reversal of 12015500250540 is 4505200551021.

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

It is a junction number, because it is equal to n+sod(n) for n = 12015500250498 and 12015500250507.

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, 151901536 + ... + 151980615.

It is an arithmetic number, because the mean of its divisors is an integer number (701967771120).

Almost surely, 2^{12015500250540} is an apocalyptic number.

12015500250540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12015500250540 is an abundant number, since it is smaller than the sum of its proper divisors (21678952763220).

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

12015500250540 is a wasteful number, since it uses less digits than its factorization.

12015500250540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303882822 (or 303882820 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The spelling of 12015500250540 in words is "twelve trillion, fifteen billion, five hundred million, two hundred fifty thousand, five hundred forty".