4378040406644 has 6 divisors (see below), whose sum is σ = 7661570711634. Its totient is φ = 2189020203320.

The previous prime is 4378040406547. The next prime is 4378040406721. The reversal of 4378040406644 is 4466040408734.

It can be written as a sum of positive squares in only one way, i.e., 3728807344144 + 649233062500 = 1931012^2 + 805750^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4378040406592 and 4378040406601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 547255050827 + ... + 547255050834.

It is an arithmetic number, because the mean of its divisors is an integer number (1276928451939).

Almost surely, 2^{4378040406644} is an apocalyptic number.

It is an amenable number.

4378040406644 is a deficient number, since it is larger than the sum of its proper divisors (3283530304990).

4378040406644 is a wasteful number, since it uses less digits than its factorization.

4378040406644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094510101665 (or 1094510101663 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 50.

The spelling of 4378040406644 in words is "four trillion, three hundred seventy-eight billion, forty million, four hundred six thousand, six hundred forty-four".