41644618644 has 24 divisors (see below), whose sum is σ = 98501885440. Its totient is φ = 13691381184.

The previous prime is 41644618597. The next prime is 41644618649. The reversal of 41644618644 is 44681644614.

41644618644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 41644618593 and 41644618602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41644618649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23768884 + ... + 23770635.

Almost surely, 2^41644618644 is an apocalyptic number.

It is an amenable number.

41644618644 is an abundant number, since it is smaller than the sum of its proper divisors (56857266796).

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

41644618644 is a wasteful number, since it uses less digits than its factorization.

41644618644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47539599 (or 47539597 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 48.

The spelling of 41644618644 in words is "forty-one billion, six hundred forty-four million, six hundred eighteen thousand, six hundred forty-four".