44621212644 has 72 divisors (see below), whose sum is σ = 119779863840. Its totient is φ = 13966186752.

The previous prime is 44621212639. The next prime is 44621212661.

44621212644 is a `hidden beast` number, since 4 + 4 + 6 + 2 + 1 + 2 + 1 + 2 + 644 = 666.

44621212644 is nontrivially palindromic in base 10.

44621212644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 44621212599 and 44621212608.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 211362 + ... + 365945.

It is an arithmetic number, because the mean of its divisors is an integer number (1663609220).

Almost surely, 2^44621212644 is an apocalyptic number.

It is an amenable number.

44621212644 is an abundant number, since it is smaller than the sum of its proper divisors (75158651196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

44621212644 is a wasteful number, since it uses less digits than its factorization.

44621212644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577449 (or 577444 counting only the distinct ones).

The product of its digits is 73728, while the sum is 36.

The spelling of 44621212644 in words is "forty-four billion, six hundred twenty-one million, two hundred twelve thousand, six hundred forty-four".