12048978931919 has 4 divisors (see below), whose sum is σ = 12059429044896. Its totient is φ = 12038528818944.

The previous prime is 12048978931883. The next prime is 12048978931931. The reversal of 12048978931919 is 91913987984021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12048978931919 is a prime.

It is a super-3 number, since 3×12048978931919³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12048978931999) 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, 5225054759 + ... + 5225057064.

It is an arithmetic number, because the mean of its divisors is an integer number (3014857261224).

Almost surely, 2^{12048978931919} is an apocalyptic number.

12048978931919 is a deficient number, since it is larger than the sum of its proper divisors (10450112977).

12048978931919 is a wasteful number, since it uses less digits than its factorization.

12048978931919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10450112976.

The product of its (nonzero) digits is 70543872, while the sum is 71.

The spelling of 12048978931919 in words is "twelve trillion, forty-eight billion, nine hundred seventy-eight million, nine hundred thirty-one thousand, nine hundred nineteen".