12012561523151 has 32 divisors (see below), whose sum is σ = 14492936016000. Its totient is φ = 9940706361600.

The previous prime is 12012561523129. The next prime is 12012561523169. The reversal of 12012561523151 is 15132516521021.

It is not a de Polignac number, because 12012561523151 - 2²⁶ = 12012494414287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012561523111) 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, 169391801 + ... + 169462701.

It is an arithmetic number, because the mean of its divisors is an integer number (452904250500).

Almost surely, 2^{12012561523151} is an apocalyptic number.

12012561523151 is a deficient number, since it is larger than the sum of its proper divisors (2480374492849).

12012561523151 is an equidigital number, since it uses as much as digits as its factorization.

12012561523151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87984 (or 87970 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 12012561523151 in words is "twelve trillion, twelve billion, five hundred sixty-one million, five hundred twenty-three thousand, one hundred fifty-one".