12152976532421 has 8 divisors (see below), whose sum is σ = 12273460349688. Its totient is φ = 12032495800000.

The previous prime is 12152976532399. The next prime is 12152976532429. The reversal of 12152976532421 is 12423567925121.

It can be written as a sum of positive squares in 4 ways, for example, as 5655121802500 + 6497854729921 = 2378050^2 + 2549089^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12152976532421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12152976532421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12152976532429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7594571 + ... + 9054471.

It is an arithmetic number, because the mean of its divisors is an integer number (1534182543711).

Almost surely, 2^{12152976532421} is an apocalyptic number.

It is an amenable number.

12152976532421 is a deficient number, since it is larger than the sum of its proper divisors (120483817267).

12152976532421 is a wasteful number, since it uses less digits than its factorization.

12152976532421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542423.

The product of its digits is 1814400, while the sum is 50.

The spelling of 12152976532421 in words is "twelve trillion, one hundred fifty-two billion, nine hundred seventy-six million, five hundred thirty-two thousand, four hundred twenty-one".