440608518045 has 54 divisors (see below), whose sum is σ = 778820303898. Its totient is φ = 230433922368.

The previous prime is 440608517983. The next prime is 440608518107. The reversal of 440608518045 is 540815806044.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (440608517983) and next prime (440608518107).

It can be written as a sum of positive squares in 3 ways, for example, as 120590896644 + 320017621401 = 347262^2 + 565701^2 .

It is not a de Polignac number, because 440608518045 - 2⁹ = 440608517533 is a prime.

It is a super-2 number, since 2×440608518045² (a number of 24 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 235997202 + ... + 235999068.

Almost surely, 2^440608518045 is an apocalyptic number.

440608518045 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

440608518045 is a deficient number, since it is larger than the sum of its proper divisors (338211785853).

440608518045 is an frugal number, since it uses more digits than its factorization.

440608518045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3851 (or 1928 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 45.

Multiplying 440608518045 by its sum of digits (45), we get a square (19827383312025 = 4452795²).

440608518045 divided by its sum of digits (45) gives a square (9791300401 = 98951²).

The spelling of 440608518045 in words is "four hundred forty billion, six hundred eight million, five hundred eighteen thousand, forty-five".