44135005551 has 72 divisors (see below), whose sum is σ = 78027217920. Its totient is φ = 22054503744.

The previous prime is 44135005507. The next prime is 44135005619. The reversal of 44135005551 is 15550053144.

It is not a de Polignac number, because 44135005551 - 2⁷ = 44135005423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44135005501) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 425266 + ... + 518768.

It is an arithmetic number, because the mean of its divisors is an integer number (1083711360).

Almost surely, 2^44135005551 is an apocalyptic number.

44135005551 is a deficient number, since it is larger than the sum of its proper divisors (33892212369).

44135005551 is a wasteful number, since it uses less digits than its factorization.

44135005551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93565 (or 93545 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

Adding to 44135005551 its reverse (15550053144), we get a palindrome (59685058695).

The spelling of 44135005551 in words is "forty-four billion, one hundred thirty-five million, five thousand, five hundred fifty-one".