44538226561 has 4 divisors (see below), whose sum is σ = 45741962452. Its totient is φ = 43334490672.

The previous prime is 44538226471. The next prime is 44538226567. The reversal of 44538226561 is 16562283544.

It is a happy number.

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 25009841025 + 19528385536 = 158145^2 + 139744^2 .

It is a cyclic number.

It is not a de Polignac number, because 44538226561 - 2¹⁵ = 44538193793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44538226567) 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, 601867890 + ... + 601867963.

It is an arithmetic number, because the mean of its divisors is an integer number (11435490613).

Almost surely, 2^44538226561 is an apocalyptic number.

It is an amenable number.

44538226561 is a deficient number, since it is larger than the sum of its proper divisors (1203735891).

44538226561 is a wasteful number, since it uses less digits than its factorization.

44538226561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203735890.

The product of its digits is 1382400, while the sum is 46.

The spelling of 44538226561 in words is "forty-four billion, five hundred thirty-eight million, two hundred twenty-six thousand, five hundred sixty-one".