40463622644 has 12 divisors (see below), whose sum is σ = 70880701668. Its totient is φ = 20211993600.

The previous prime is 40463622637. The next prime is 40463622659. The reversal of 40463622644 is 44622636404.

It can be written as a sum of positive squares in 2 ways, for example, as 13360585744 + 27103036900 = 115588^2 + 164630^2 .

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, 4949837 + ... + 4958004.

It is an arithmetic number, because the mean of its divisors is an integer number (5906725139).

Almost surely, 2^40463622644 is an apocalyptic number.

It is an amenable number.

40463622644 is a deficient number, since it is larger than the sum of its proper divisors (30417079024).

40463622644 is a wasteful number, since it uses less digits than its factorization.

40463622644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9908866 (or 9908864 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 41.

The spelling of 40463622644 in words is "forty billion, four hundred sixty-three million, six hundred twenty-two thousand, six hundred forty-four".