44836649138 has 4 divisors (see below), whose sum is σ = 67254973710. Its totient is φ = 22418324568.

The previous prime is 44836649093. The next prime is 44836649147. The reversal of 44836649138 is 83194663844.

44836649138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 38914269289 + 5922379849 = 197267^2 + 76957^2 .

It is a super-2 number, since 2×44836649138² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11209162283 + ... + 11209162286.

Almost surely, 2^44836649138 is an apocalyptic number.

44836649138 is a deficient number, since it is larger than the sum of its proper divisors (22418324572).

44836649138 is a wasteful number, since it uses less digits than its factorization.

44836649138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22418324571.

The product of its digits is 11943936, while the sum is 56.

The spelling of 44836649138 in words is "forty-four billion, eight hundred thirty-six million, six hundred forty-nine thousand, one hundred thirty-eight".