44687478644 has 12 divisors (see below), whose sum is σ = 78205014468. Its totient is φ = 22343188800.

The previous prime is 44687478611. The next prime is 44687478653.

44687478644 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 5835126544 + 38852352100 = 76388^2 + 197110^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85034 + ... + 310814.

It is an arithmetic number, because the mean of its divisors is an integer number (6517084539).

Almost surely, 2^44687478644 is an apocalyptic number.

It is an amenable number.

44687478644 is a deficient number, since it is larger than the sum of its proper divisors (33517535824).

44687478644 is a wasteful number, since it uses less digits than its factorization.

44687478644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275266 (or 275264 counting only the distinct ones).

The product of its digits is 115605504, while the sum is 62.

The spelling of 44687478644 in words is "forty-four billion, six hundred eighty-seven million, four hundred seventy-eight thousand, six hundred forty-four".