44392866643 has 4 divisors (see below), whose sum is σ = 44850525160. Its totient is φ = 43935208128.

The previous prime is 44392866613. The next prime is 44392866647. The reversal of 44392866643 is 34666829344.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44392866643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44392866647) 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, 228829113 + ... + 228829306.

It is an arithmetic number, because the mean of its divisors is an integer number (11212631290).

Almost surely, 2^44392866643 is an apocalyptic number.

44392866643 is a deficient number, since it is larger than the sum of its proper divisors (457658517).

44392866643 is an equidigital number, since it uses as much as digits as its factorization.

44392866643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457658516.

The product of its digits is 17915904, while the sum is 55.

The spelling of 44392866643 in words is "forty-four billion, three hundred ninety-two million, eight hundred sixty-six thousand, six hundred forty-three".