17745444045 has 24 divisors (see below), whose sum is σ = 35152880256. Its totient is φ = 8112202848.

The previous prime is 17745444043. The next prime is 17745444077. The reversal of 17745444045 is 54044454771.

It is not a de Polignac number, because 17745444045 - 2¹ = 17745444043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17745444043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28167057 + ... + 28167686.

It is an arithmetic number, because the mean of its divisors is an integer number (1464703344).

Almost surely, 2^17745444045 is an apocalyptic number.

17745444045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

17745444045 is a deficient number, since it is larger than the sum of its proper divisors (17407436211).

17745444045 is a wasteful number, since it uses less digits than its factorization.

17745444045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56334761 (or 56334758 counting only the distinct ones).

The product of its (nonzero) digits is 1254400, while the sum is 45.

The spelling of 17745444045 in words is "seventeen billion, seven hundred forty-five million, four hundred forty-four thousand, forty-five".