12549489419847 has 24 divisors (see below), whose sum is σ = 17988979309056. Its totient is φ = 7779319643008.

The previous prime is 12549489419809. The next prime is 12549489419849. The reversal of 12549489419847 is 74891498494521.

It is not a de Polignac number, because 12549489419847 - 2²⁰ = 12549488371271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12549489419849) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87124503 + ... + 87268424.

It is an arithmetic number, because the mean of its divisors is an integer number (749540804544).

Almost surely, 2^{12549489419847} is an apocalyptic number.

12549489419847 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12549489419847 is a deficient number, since it is larger than the sum of its proper divisors (5439489889209).

12549489419847 is a wasteful number, since it uses less digits than its factorization.

12549489419847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174393047 (or 174393030 counting only the distinct ones).

The product of its digits is 836075520, while the sum is 75.

The spelling of 12549489419847 in words is "twelve trillion, five hundred forty-nine billion, four hundred eighty-nine million, four hundred nineteen thousand, eight hundred forty-seven".