20522454403 has 8 divisors (see below), whose sum is σ = 22391593920. Its totient is φ = 18653891880.

The previous prime is 20522454371. The next prime is 20522454431. The reversal of 20522454403 is 30445422502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20522454403 - 2⁵ = 20522454371 is a prime.

It is a super-2 number, since 2×20522454403² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20522454443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68125 + ... + 213742.

It is an arithmetic number, because the mean of its divisors is an integer number (2798949240).

Almost surely, 2^20522454403 is an apocalyptic number.

20522454403 is a deficient number, since it is larger than the sum of its proper divisors (1869139517).

20522454403 is a wasteful number, since it uses less digits than its factorization.

20522454403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288497.

The product of its (nonzero) digits is 38400, while the sum is 31.

Adding to 20522454403 its reverse (30445422502), we get a palindrome (50967876905).

The spelling of 20522454403 in words is "twenty billion, five hundred twenty-two million, four hundred fifty-four thousand, four hundred three".