45453144638 has 64 divisors (see below), whose sum is σ = 76593600000. Its totient is φ = 20055657600.

The previous prime is 45453144631. The next prime is 45453144661. The reversal of 45453144638 is 83644135454.

It is a junction number, because it is equal to n+sod(n) for n = 45453144592 and 45453144601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45453144631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38486408 + ... + 38487588.

It is an arithmetic number, because the mean of its divisors is an integer number (1196775000).

Almost surely, 2^45453144638 is an apocalyptic number.

45453144638 is a deficient number, since it is larger than the sum of its proper divisors (31140455362).

45453144638 is a wasteful number, since it uses less digits than its factorization.

45453144638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601.

The product of its digits is 2764800, while the sum is 47.

It can be divided in two parts, 45453 and 144638, that added together give a palindrome (190091).

The spelling of 45453144638 in words is "forty-five billion, four hundred fifty-three million, one hundred forty-four thousand, six hundred thirty-eight".