12015119951 has 4 divisors (see below), whose sum is σ = 12049157472. Its totient is φ = 11981082432.

The previous prime is 12015119939. The next prime is 12015119957. The reversal of 12015119951 is 15991151021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15991151021 = 15823 ⋅1010627.

It is a cyclic number.

It is not a de Polignac number, because 12015119951 - 2⁶ = 12015119887 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 (12015119957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17018231 + ... + 17018936.

It is an arithmetic number, because the mean of its divisors is an integer number (3012289368).

Almost surely, 2^12015119951 is an apocalyptic number.

12015119951 is a deficient number, since it is larger than the sum of its proper divisors (34037521).

12015119951 is an equidigital number, since it uses as much as digits as its factorization.

12015119951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34037520.

The product of its (nonzero) digits is 4050, while the sum is 35.

The spelling of 12015119951 in words is "twelve billion, fifteen million, one hundred nineteen thousand, nine hundred fifty-one".