12049048971 has 20 divisors (see below), whose sum is σ = 18304275000. Its totient is φ = 7896548736.

The previous prime is 12049048967. The next prime is 12049049003. The reversal of 12049048971 is 17984094021.

It is a happy number.

12049048971 is a `hidden beast` number, since 12 + 0 + 4 + 90 + 489 + 71 = 666.

It is not a de Polignac number, because 12049048971 - 2² = 12049048967 is a prime.

It is a super-2 number, since 2×12049048971² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12049048901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1255846 + ... + 1265403.

It is an arithmetic number, because the mean of its divisors is an integer number (915213750).

Almost surely, 2^12049048971 is an apocalyptic number.

12049048971 is a deficient number, since it is larger than the sum of its proper divisors (6255226029).

12049048971 is an equidigital number, since it uses as much as digits as its factorization.

12049048971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521320 (or 2521311 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 12049048971 in words is "twelve billion, forty-nine million, forty-eight thousand, nine hundred seventy-one".