20354031031450 has 12 divisors (see below), whose sum is σ = 37858497718590. Its totient is φ = 8141612412560.

The previous prime is 20354031031447. The next prime is 20354031031531. The reversal of 20354031031450 is 5413013045302.

It can be written as a sum of positive squares in 3 ways, for example, as 17278213083849 + 3075817947601 = 4156707^2 + 1753801^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203540310265 + ... + 203540310364.

Almost surely, 2^{20354031031450} is an apocalyptic number.

20354031031450 is a deficient number, since it is larger than the sum of its proper divisors (17504466687140).

20354031031450 is a wasteful number, since it uses less digits than its factorization.

20354031031450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407080620641 (or 407080620636 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 20354031031450 its reverse (5413013045302), we get a palindrome (25767044076752).

The spelling of 20354031031450 in words is "twenty trillion, three hundred fifty-four billion, thirty-one million, thirty-one thousand, four hundred fifty".