1553173405816 has 8 divisors (see below), whose sum is σ = 2912200135920. Its totient is φ = 776586702904.

The previous prime is 1553173405807. The next prime is 1553173405841. The reversal of 1553173405816 is 6185043713551.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1553173405816.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97073337856 + ... + 97073337871.

It is an arithmetic number, because the mean of its divisors is an integer number (364025016990).

Almost surely, 2^{1553173405816} is an apocalyptic number.

It is an amenable number.

1553173405816 is a deficient number, since it is larger than the sum of its proper divisors (1359026730104).

1553173405816 is a wasteful number, since it uses less digits than its factorization.

1553173405816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194146675733 (or 194146675729 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 49.

The spelling of 1553173405816 in words is "one trillion, five hundred fifty-three billion, one hundred seventy-three million, four hundred five thousand, eight hundred sixteen".