44987649161 has 32 divisors (see below), whose sum is σ = 56618150400. Its totient is φ = 35519819328.

The previous prime is 44987649149. The next prime is 44987649173. The reversal of 44987649161 is 16194678944.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (44987649149) and next prime (44987649173).

It is a de Polignac number, because none of the positive numbers 2^k-44987649161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44987649161.

It is not an unprimeable number, because it can be changed into a prime (44987649961) 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 31 ways as a sum of consecutive naturals, for example, 2161175 + ... + 2181891.

It is an arithmetic number, because the mean of its divisors is an integer number (1769317200).

Almost surely, 2^44987649161 is an apocalyptic number.

It is an amenable number.

44987649161 is a deficient number, since it is larger than the sum of its proper divisors (11630501239).

44987649161 is a wasteful number, since it uses less digits than its factorization.

44987649161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21238 (or 21224 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 59.

The spelling of 44987649161 in words is "forty-four billion, nine hundred eighty-seven million, six hundred forty-nine thousand, one hundred sixty-one".