20431411042454 has 4 divisors (see below), whose sum is σ = 30647116563684. Its totient is φ = 10215705521226.

The previous prime is 20431411042373. The next prime is 20431411042457. The reversal of 20431411042454 is 45424011413402.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×20431411042454² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431411042457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5107852760612 + ... + 5107852760615.

It is an arithmetic number, because the mean of its divisors is an integer number (7661779140921).

Almost surely, 2^{20431411042454} is an apocalyptic number.

20431411042454 is a deficient number, since it is larger than the sum of its proper divisors (10215705521230).

20431411042454 is a wasteful number, since it uses less digits than its factorization.

20431411042454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10215705521229.

The product of its (nonzero) digits is 61440, while the sum is 35.

Adding to 20431411042454 its reverse (45424011413402), we get a palindrome (65855422455856).

The spelling of 20431411042454 in words is "twenty trillion, four hundred thirty-one billion, four hundred eleven million, forty-two thousand, four hundred fifty-four".