440506243657551 has 16 divisors (see below), whose sum is σ = 587980429843968. Its totient is φ = 293351607129600.

The previous prime is 440506243657517. The next prime is 440506243657691. The reversal of 440506243657551 is 155756342605044.

It is not a de Polignac number, because 440506243657551 - 2¹³ = 440506243649359 is a prime.

It is a super-2 number, since 2×440506243657551² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 440506243657491 and 440506243657500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440506243656551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9722770 + ... + 31233711.

It is an arithmetic number, because the mean of its divisors is an integer number (36748776865248).

Almost surely, 2^{440506243657551} is an apocalyptic number.

440506243657551 is a deficient number, since it is larger than the sum of its proper divisors (147474186186417).

440506243657551 is a wasteful number, since it uses less digits than its factorization.

440506243657551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40960382.

The product of its (nonzero) digits is 60480000, while the sum is 57.

The spelling of 440506243657551 in words is "four hundred forty trillion, five hundred six billion, two hundred forty-three million, six hundred fifty-seven thousand, five hundred fifty-one".