12126151545 has 32 divisors (see below), whose sum is σ = 19683109632. Its totient is φ = 6373665792.

The previous prime is 12126151463. The next prime is 12126151547. The reversal of 12126151545 is 54515162121.

It is a happy number.

It is not a de Polignac number, because 12126151545 - 2⁷ = 12126151417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12126151547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1685997 + ... + 1693173.

It is an arithmetic number, because the mean of its divisors is an integer number (615097176).

Almost surely, 2^12126151545 is an apocalyptic number.

12126151545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12126151545 is a deficient number, since it is larger than the sum of its proper divisors (7556958087).

12126151545 is a wasteful number, since it uses less digits than its factorization.

12126151545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8801.

The product of its digits is 12000, while the sum is 33.

The spelling of 12126151545 in words is "twelve billion, one hundred twenty-six million, one hundred fifty-one thousand, five hundred forty-five".