203451005345012 has 6 divisors (see below), whose sum is σ = 356039259353778. Its totient is φ = 101725502672504.

The previous prime is 203451005345011. The next prime is 203451005345023. The reversal of 203451005345012 is 210543500154302.

It can be written as a sum of positive squares in only one way, i.e., 133801365100516 + 69649640244496 = 11567254^2 + 8345636^2 .

It is a super-2 number, since 2×203451005345012² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203451005345011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25431375668123 + ... + 25431375668130.

It is an arithmetic number, because the mean of its divisors is an integer number (59339876558963).

Almost surely, 2^{203451005345012} is an apocalyptic number.

It is an amenable number.

203451005345012 is a deficient number, since it is larger than the sum of its proper divisors (152588254008766).

203451005345012 is a wasteful number, since it uses less digits than its factorization.

203451005345012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50862751336257 (or 50862751336255 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 203451005345012 its reverse (210543500154302), we get a palindrome (413994505499314).

The spelling of 203451005345012 in words is "two hundred three trillion, four hundred fifty-one billion, five million, three hundred forty-five thousand, twelve".