1617403231444 has 96 divisors (see below), whose sum is σ = 3965564123136. Its totient is φ = 556392862080.

The previous prime is 1617403231399. The next prime is 1617403231463. The reversal of 1617403231444 is 4441323047161.

It is a junction number, because it is equal to n+sod(n) for n = 1617403231397 and 1617403231406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8689362 + ... + 8873545.

It is an arithmetic number, because the mean of its divisors is an integer number (41307959616).

Almost surely, 2^{1617403231444} is an apocalyptic number.

1617403231444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1617403231444 is an abundant number, since it is smaller than the sum of its proper divisors (2348160891692).

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

1617403231444 is a wasteful number, since it uses less digits than its factorization.

1617403231444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17562965 (or 17562963 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 1617403231444 in words is "one trillion, six hundred seventeen billion, four hundred three million, two hundred thirty-one thousand, four hundred forty-four".