20401450522 has 8 divisors (see below), whose sum is σ = 30630177396. Its totient is φ = 10191391392.

The previous prime is 20401450493. The next prime is 20401450567. The reversal of 20401450522 is 22505410402.

It can be written as a sum of positive squares in 2 ways, for example, as 19670343001 + 731107521 = 140251^2 + 27039^2 .

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

It is a super-2 number, since 2×20401450522² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4664203 + ... + 4668574.

Almost surely, 2^20401450522 is an apocalyptic number.

20401450522 is a deficient number, since it is larger than the sum of its proper divisors (10228726874).

20401450522 is a wasteful number, since it uses less digits than its factorization.

20401450522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9333872.

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 20401450522 its reverse (22505410402), we get a palindrome (42906860924).

The spelling of 20401450522 in words is "twenty billion, four hundred one million, four hundred fifty thousand, five hundred twenty-two".