438736793855 has 16 divisors (see below), whose sum is σ = 535847991840. Its totient is φ = 344756662272.

The previous prime is 438736793837. The next prime is 438736793867. The reversal of 438736793855 is 558397637834.

It is a cyclic number.

It is not a de Polignac number, because 438736793855 - 2⁶ = 438736793791 is a prime.

It is a super-2 number, since 2×438736793855² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 252014 + ... + 970043.

It is an arithmetic number, because the mean of its divisors is an integer number (33490499490).

Almost surely, 2^438736793855 is an apocalyptic number.

438736793855 is a deficient number, since it is larger than the sum of its proper divisors (97111197985).

438736793855 is a wasteful number, since it uses less digits than its factorization.

438736793855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223338.

The product of its digits is 457228800, while the sum is 68.

The spelling of 438736793855 in words is "four hundred thirty-eight billion, seven hundred thirty-six million, seven hundred ninety-three thousand, eight hundred fifty-five".