12150621845 has 16 divisors (see below), whose sum is σ = 14983904640. Its totient is φ = 9452044224.

The previous prime is 12150621841. The next prime is 12150621859. The reversal of 12150621845 is 54812605121.

It is a cyclic number.

It is not a de Polignac number, because 12150621845 - 2² = 12150621841 is a prime.

It is a super-2 number, since 2×12150621845² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12150621841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299696 + ... + 337814.

It is an arithmetic number, because the mean of its divisors is an integer number (936494040).

Almost surely, 2^12150621845 is an apocalyptic number.

It is an amenable number.

12150621845 is a deficient number, since it is larger than the sum of its proper divisors (2833282795).

12150621845 is a wasteful number, since it uses less digits than its factorization.

12150621845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39884.

The product of its (nonzero) digits is 19200, while the sum is 35.

The spelling of 12150621845 in words is "twelve billion, one hundred fifty million, six hundred twenty-one thousand, eight hundred forty-five".