12445545984 has 160 divisors (see below), whose sum is σ = 35477967360. Its totient is φ = 3865190400.

The previous prime is 12445545979. The next prime is 12445546049. The reversal of 12445545984 is 48954554421.

It is a super-2 number, since 2×12445545984² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1776729 + ... + 1783719.

It is an arithmetic number, because the mean of its divisors is an integer number (221737296).

Almost surely, 2^12445545984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12445545984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17738983680).

12445545984 is an abundant number, since it is smaller than the sum of its proper divisors (23032421376).

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

12445545984 is an equidigital number, since it uses as much as digits as its factorization.

12445545984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7092 (or 7076 counting only the distinct ones).

The product of its digits is 4608000, while the sum is 51.

The spelling of 12445545984 in words is "twelve billion, four hundred forty-five million, five hundred forty-five thousand, nine hundred eighty-four".