438090000012 has 48 divisors (see below), whose sum is σ = 1298044446720. Its totient is φ = 125168571216.

The previous prime is 438090000001. The next prime is 438090000031. The reversal of 438090000012 is 210000090834.

It is a super-2 number, since 2×438090000012² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289741308 + ... + 289742819.

It is an arithmetic number, because the mean of its divisors is an integer number (27042592640).

Almost surely, 2^438090000012 is an apocalyptic number.

438090000012 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

438090000012 is an abundant number, since it is smaller than the sum of its proper divisors (859954446708).

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

438090000012 is a wasteful number, since it uses less digits than its factorization.

438090000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579484147 (or 579484139 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 438090000012 its reverse (210000090834), we get a palindrome (648090090846).

The spelling of 438090000012 in words is "four hundred thirty-eight billion, ninety million, twelve", and thus it is an aban number.