12453545205 has 32 divisors (see below), whose sum is σ = 22679637120. Its totient is φ = 6479890560.

The previous prime is 12453545191. The next prime is 12453545239. The reversal of 12453545205 is 50254535421.

12453545205 is a `hidden beast` number, since 124 + 5 + 3 + 5 + 4 + 520 + 5 = 666.

It is not a de Polignac number, because 12453545205 - 2⁴ = 12453545189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12453545205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1119447 + ... + 1130516.

It is an arithmetic number, because the mean of its divisors is an integer number (708738660).

Almost surely, 2^12453545205 is an apocalyptic number.

12453545205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12453545205 is a deficient number, since it is larger than the sum of its proper divisors (10226091915).

12453545205 is a wasteful number, since it uses less digits than its factorization.

12453545205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2250018 (or 2250012 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 12453545205 in words is "twelve billion, four hundred fifty-three million, five hundred forty-five thousand, two hundred five".