1628404041644 has 12 divisors (see below), whose sum is σ = 2999691655800. Its totient is φ = 771349282848.

The previous prime is 1628404041637. The next prime is 1628404041673. The reversal of 1628404041644 is 4461404048261.

It is a junction number, because it is equal to n+sod(n) for n = 1628404041595 and 1628404041604.

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, 10713184409 + ... + 10713184560.

It is an arithmetic number, because the mean of its divisors is an integer number (249974304650).

Almost surely, 2^{1628404041644} is an apocalyptic number.

It is an amenable number.

1628404041644 is a deficient number, since it is larger than the sum of its proper divisors (1371287614156).

1628404041644 is a wasteful number, since it uses less digits than its factorization.

1628404041644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21426368992 (or 21426368990 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 44.

The spelling of 1628404041644 in words is "one trillion, six hundred twenty-eight billion, four hundred four million, forty-one thousand, six hundred forty-four".