12478549211 has 8 divisors (see below), whose sum is σ = 12580652544. Its totient is φ = 12376506240.

The previous prime is 12478549183. The next prime is 12478549243. The reversal of 12478549211 is 11294587421.

It is a happy number.

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-12478549211 is a prime.

It is a super-2 number, since 2×12478549211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12478546211) 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, 460931 + ... + 487251.

It is an arithmetic number, because the mean of its divisors is an integer number (1572581568).

Almost surely, 2^12478549211 is an apocalyptic number.

12478549211 is a deficient number, since it is larger than the sum of its proper divisors (102103333).

12478549211 is a wasteful number, since it uses less digits than its factorization.

12478549211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30181.

The product of its digits is 161280, while the sum is 44.

The spelling of 12478549211 in words is "twelve billion, four hundred seventy-eight million, five hundred forty-nine thousand, two hundred eleven".