20401012424 has 32 divisors (see below), whose sum is σ = 43362480000. Its totient is φ = 8920279872.

The previous prime is 20401012339. The next prime is 20401012459. The reversal of 20401012424 is 42421010402.

It is a junction number, because it is equal to n+sod(n) for n = 20401012396 and 20401012405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5160224 + ... + 5164175.

It is an arithmetic number, because the mean of its divisors is an integer number (1355077500).

Almost surely, 2^20401012424 is an apocalyptic number.

It is an amenable number.

20401012424 is an abundant number, since it is smaller than the sum of its proper divisors (22961467576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20401012424 is a wasteful number, since it uses less digits than its factorization.

20401012424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10324437 (or 10324433 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20401012424 its reverse (42421010402), we get a palindrome (62822022826).

The spelling of 20401012424 in words is "twenty billion, four hundred one million, twelve thousand, four hundred twenty-four".