12455077217 has 12 divisors (see below), whose sum is σ = 14433632016. Its totient is φ = 10656747840.

The previous prime is 12455077207. The next prime is 12455077241. The reversal of 12455077217 is 71277055421.

It is not a de Polignac number, because 12455077217 - 2⁶ = 12455077153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12455077207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1955783 + ... + 1962140.

It is an arithmetic number, because the mean of its divisors is an integer number (1202802668).

Almost surely, 2^12455077217 is an apocalyptic number.

12455077217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12455077217 is a deficient number, since it is larger than the sum of its proper divisors (1978554799).

12455077217 is a wasteful number, since it uses less digits than its factorization.

12455077217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3917968 (or 3917951 counting only the distinct ones).

The product of its (nonzero) digits is 137200, while the sum is 41.

The spelling of 12455077217 in words is "twelve billion, four hundred fifty-five million, seventy-seven thousand, two hundred seventeen".