20010163400431 has 2 divisors, whose sum is σ = 20010163400432. Its totient is φ = 20010163400430.

The previous prime is 20010163400399. The next prime is 20010163400527. The reversal of 20010163400431 is 13400436101002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20010163400431 - 2⁵ = 20010163400399 is a prime.

It is a super-2 number, since 2×20010163400431² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20010163400396 and 20010163400405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20010163460431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005081700215 + 10005081700216.

It is an arithmetic number, because the mean of its divisors is an integer number (10005081700216).

Almost surely, 2^{20010163400431} is an apocalyptic number.

20010163400431 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010163400431 is an equidigital number, since it uses as much as digits as its factorization.

20010163400431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 20010163400431 its reverse (13400436101002), we get a palindrome (33410599501433).

The spelling of 20010163400431 in words is "twenty trillion, ten billion, one hundred sixty-three million, four hundred thousand, four hundred thirty-one".