44040402045 has 24 divisors (see below), whose sum is σ = 80827092216. Its totient is φ = 22106554368.

The previous prime is 44040401987. The next prime is 44040402053. The reversal of 44040402045 is 54020404044.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 854159076 + 43186242969 = 29226^2 + 207813^2 .

It is not a de Polignac number, because 44040402045 - 2⁶ = 44040401981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28783812 + ... + 28785341.

It is an arithmetic number, because the mean of its divisors is an integer number (3367795509).

Almost surely, 2^44040402045 is an apocalyptic number.

44040402045 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

44040402045 is a deficient number, since it is larger than the sum of its proper divisors (36786690171).

44040402045 is a wasteful number, since it uses less digits than its factorization.

44040402045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57569181 (or 57569178 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

Adding to 44040402045 its reverse (54020404044), we get a palindrome (98060806089).

The spelling of 44040402045 in words is "forty-four billion, forty million, four hundred two thousand, forty-five".