44450500645 has 4 divisors (see below), whose sum is σ = 53340600780. Its totient is φ = 35560400512.

The previous prime is 44450500643. The next prime is 44450500687. The reversal of 44450500645 is 54600505444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13233971521 + 31216529124 = 115039^2 + 176682^2 .

It is a cyclic number.

It is not a de Polignac number, because 44450500645 - 2¹ = 44450500643 is a prime.

It is a super-2 number, since 2×44450500645² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44450500643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4445050060 + ... + 4445050069.

It is an arithmetic number, because the mean of its divisors is an integer number (13335150195).

Almost surely, 2^44450500645 is an apocalyptic number.

It is an amenable number.

44450500645 is a deficient number, since it is larger than the sum of its proper divisors (8890100135).

44450500645 is an equidigital number, since it uses as much as digits as its factorization.

44450500645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8890100134.

The product of its (nonzero) digits is 192000, while the sum is 37.

The spelling of 44450500645 in words is "forty-four billion, four hundred fifty million, five hundred thousand, six hundred forty-five".