20534322454 has 4 divisors (see below), whose sum is σ = 30801483684. Its totient is φ = 10267161226.

The previous prime is 20534322437. The next prime is 20534322461. The reversal of 20534322454 is 45422343502.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5133580612 + ... + 5133580615.

It is an arithmetic number, because the mean of its divisors is an integer number (7700370921).

Almost surely, 2^20534322454 is an apocalyptic number.

20534322454 is a deficient number, since it is larger than the sum of its proper divisors (10267161230).

20534322454 is a wasteful number, since it uses less digits than its factorization.

20534322454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10267161229.

The product of its (nonzero) digits is 115200, while the sum is 34.

Adding to 20534322454 its reverse (45422343502), we get a palindrome (65956665956).

The spelling of 20534322454 in words is "twenty billion, five hundred thirty-four million, three hundred twenty-two thousand, four hundred fifty-four".