12015132243551 has 8 divisors (see below), whose sum is σ = 12067660542960. Its totient is φ = 11962712587392.

The previous prime is 12015132243493. The next prime is 12015132243577. The reversal of 12015132243551 is 15534223151021.

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

It is a cyclic number.

It is not a de Polignac number, because 12015132243551 - 2⁴² = 7617085732447 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 (12015132248551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26939141 + ... + 27381518.

It is an arithmetic number, because the mean of its divisors is an integer number (1508457567870).

Almost surely, 2^{12015132243551} is an apocalyptic number.

12015132243551 is a deficient number, since it is larger than the sum of its proper divisors (52528299409).

12015132243551 is an equidigital number, since it uses as much as digits as its factorization.

12015132243551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54321625.

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 12015132243551 its reverse (15534223151021), we get a palindrome (27549355394572).

The spelling of 12015132243551 in words is "twelve trillion, fifteen billion, one hundred thirty-two million, two hundred forty-three thousand, five hundred fifty-one".