20430020451442 has 16 divisors (see below), whose sum is σ = 35153088834240. Its totient is φ = 8723173892688.

The previous prime is 20430020451343. The next prime is 20430020451469. The reversal of 20430020451442 is 24415402003402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2712425928 + ... + 2712433459.

It is an arithmetic number, because the mean of its divisors is an integer number (2197068052140).

Almost surely, 2^{20430020451442} is an apocalyptic number.

20430020451442 is a deficient number, since it is larger than the sum of its proper divisors (14723068382798).

20430020451442 is a wasteful number, since it uses less digits than its factorization.

20430020451442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5424859665.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 20430020451442 its reverse (24415402003402), we get a palindrome (44845422454844).

The spelling of 20430020451442 in words is "twenty trillion, four hundred thirty billion, twenty million, four hundred fifty-one thousand, four hundred forty-two".