44399646851 has 4 divisors (see below), whose sum is σ = 50742453552. Its totient is φ = 38056840152.

The previous prime is 44399646829. The next prime is 44399646857. The reversal of 44399646851 is 15864699344.

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

It is a cyclic number.

It is not a de Polignac number, because 44399646851 - 2¹⁸ = 44399384707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44399646857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3171403340 + ... + 3171403353.

It is an arithmetic number, because the mean of its divisors is an integer number (12685613388).

Almost surely, 2^44399646851 is an apocalyptic number.

44399646851 is a deficient number, since it is larger than the sum of its proper divisors (6342806701).

44399646851 is an equidigital number, since it uses as much as digits as its factorization.

44399646851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6342806700.

The product of its digits is 22394880, while the sum is 59.

The spelling of 44399646851 in words is "forty-four billion, three hundred ninety-nine million, six hundred forty-six thousand, eight hundred fifty-one".