45224212644 has 36 divisors (see below), whose sum is σ = 123110357916. Its totient is φ = 13915142208.

The previous prime is 45224212609. The next prime is 45224212667. The reversal of 45224212644 is 44621242254.

45224212644 is a `hidden beast` number, since 4 + 5 + 2 + 2 + 4 + 2 + 1 + 2 + 644 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20775763044 + 24448449600 = 144138^2 + 156360^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 45224212599 and 45224212608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48315999 + ... + 48316934.

Almost surely, 2^45224212644 is an apocalyptic number.

It is an amenable number.

45224212644 is an abundant number, since it is smaller than the sum of its proper divisors (77886145272).

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

45224212644 is a wasteful number, since it uses less digits than its factorization.

45224212644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96632956 (or 96632951 counting only the distinct ones).

The product of its digits is 122880, while the sum is 36.

Adding to 45224212644 its reverse (44621242254), we get a palindrome (89845454898).

The spelling of 45224212644 in words is "forty-five billion, two hundred twenty-four million, two hundred twelve thousand, six hundred forty-four".