20134432423400 has 24 divisors (see below), whose sum is σ = 46812555384870. Its totient is φ = 8053772969280.

The previous prime is 20134432423393. The next prime is 20134432423439. The reversal of 20134432423400 is 432423443102.

It can be written as a sum of positive squares in 3 ways, for example, as 14544811102756 + 5589621320644 = 3813766^2 + 2364238^2 .

It is a super-2 number, since 2×20134432423400² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50336080859 + ... + 50336081258.

Almost surely, 2^{20134432423400} is an apocalyptic number.

20134432423400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20134432423400 is an abundant number, since it is smaller than the sum of its proper divisors (26678122961470).

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

20134432423400 is a wasteful number, since it uses less digits than its factorization.

20134432423400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100672162133 (or 100672162124 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 20134432423400 its reverse (432423443102), we get a palindrome (20566855866502).

The spelling of 20134432423400 in words is "twenty trillion, one hundred thirty-four billion, four hundred thirty-two million, four hundred twenty-three thousand, four hundred".