44651421253 has 8 divisors (see below), whose sum is σ = 45901155320. Its totient is φ = 43403947200.

The previous prime is 44651421239. The next prime is 44651421259. The reversal of 44651421253 is 35212415644.

It can be written as a sum of positive squares in 4 ways, for example, as 26431280929 + 18220140324 = 162577^2 + 134982^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44651421253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44651421259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524898 + ... + 604003.

It is an arithmetic number, because the mean of its divisors is an integer number (5737644415).

Almost surely, 2^44651421253 is an apocalyptic number.

It is an amenable number.

44651421253 is a deficient number, since it is larger than the sum of its proper divisors (1249734067).

44651421253 is a wasteful number, since it uses less digits than its factorization.

44651421253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130007.

The product of its digits is 115200, while the sum is 37.

Adding to 44651421253 its reverse (35212415644), we get a palindrome (79863836897).

The spelling of 44651421253 in words is "forty-four billion, six hundred fifty-one million, four hundred twenty-one thousand, two hundred fifty-three".