12015897075 has 384 divisors, whose sum is σ = 29638103040. Its totient is φ = 4628275200.

The previous prime is 12015897053. The next prime is 12015897079. The reversal of 12015897075 is 57079851021.

It is not a de Polignac number, because 12015897075 - 2⁵ = 12015897043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12015897075.

It is not an unprimeable number, because it can be changed into a prime (12015897079) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 38636170 + ... + 38636480.

It is an arithmetic number, because the mean of its divisors is an integer number (77182560).

Almost surely, 2^12015897075 is an apocalyptic number.

12015897075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12015897075 is an abundant number, since it is smaller than the sum of its proper divisors (17622205965).

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

12015897075 is a wasteful number, since it uses less digits than its factorization.

12015897075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 45.

The spelling of 12015897075 in words is "twelve billion, fifteen million, eight hundred ninety-seven thousand, seventy-five".