44390136811 has 4 divisors (see below), whose sum is σ = 44392637224. Its totient is φ = 44387636400.

The previous prime is 44390136793. The next prime is 44390136841. The reversal of 44390136811 is 11863109344.

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 44390136811 - 2²¹ = 44388039659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44390136841) 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, 1223385 + ... + 1259146.

It is an arithmetic number, because the mean of its divisors is an integer number (11098159306).

Almost surely, 2^44390136811 is an apocalyptic number.

44390136811 is a deficient number, since it is larger than the sum of its proper divisors (2500413).

44390136811 is a wasteful number, since it uses less digits than its factorization.

44390136811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500412.

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 44390136811 in words is "forty-four billion, three hundred ninety million, one hundred thirty-six thousand, eight hundred eleven".