12465445272 has 32 divisors (see below), whose sum is σ = 35615558400. Its totient is φ = 3561555744.

The previous prime is 12465445271. The next prime is 12465445277. The reversal of 12465445272 is 27254456421.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12465445271) 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, 37099372 + ... + 37099707.

It is an arithmetic number, because the mean of its divisors is an integer number (1112986200).

Almost surely, 2^12465445272 is an apocalyptic number.

12465445272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12465445272 is an abundant number, since it is smaller than the sum of its proper divisors (23150113128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12465445272 is a wasteful number, since it uses less digits than its factorization.

12465445272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74199095 (or 74199091 counting only the distinct ones).

The product of its digits is 537600, while the sum is 42.

The spelling of 12465445272 in words is "twelve billion, four hundred sixty-five million, four hundred forty-five thousand, two hundred seventy-two".