44487990851 has 4 divisors (see below), whose sum is σ = 44563013352. Its totient is φ = 44412968352.

The previous prime is 44487990803. The next prime is 44487990871. The reversal of 44487990851 is 15809978444.

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 44487990851 - 2¹⁴ = 44487974467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44487990871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37510361 + ... + 37511546.

It is an arithmetic number, because the mean of its divisors is an integer number (11140753338).

Almost surely, 2^44487990851 is an apocalyptic number.

44487990851 is a deficient number, since it is larger than the sum of its proper divisors (75022501).

44487990851 is an equidigital number, since it uses as much as digits as its factorization.

44487990851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75022500.

The product of its (nonzero) digits is 11612160, while the sum is 59.

The spelling of 44487990851 in words is "forty-four billion, four hundred eighty-seven million, nine hundred ninety thousand, eight hundred fifty-one".