20423432042320 has 20 divisors (see below), whose sum is σ = 47484479498580. Its totient is φ = 8169372816896.

The previous prime is 20423432042227. The next prime is 20423432042333. The reversal of 20423432042320 is 2324023432402.

It can be written as a sum of positive squares in 2 ways, for example, as 12892293461056 + 7531138581264 = 3590584^2 + 2744292^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127646450185 + ... + 127646450344.

It is an arithmetic number, because the mean of its divisors is an integer number (2374223974929).

Almost surely, 2^{20423432042320} is an apocalyptic number.

20423432042320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20423432042320 is an abundant number, since it is smaller than the sum of its proper divisors (27061047456260).

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

20423432042320 is a wasteful number, since it uses less digits than its factorization.

20423432042320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255292900542 (or 255292900536 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 20423432042320 its reverse (2324023432402), we get a palindrome (22747455474722).

The spelling of 20423432042320 in words is "twenty trillion, four hundred twenty-three billion, four hundred thirty-two million, forty-two thousand, three hundred twenty".