20401413421 has 8 divisors (see below), whose sum is σ = 20696644800. Its totient is φ = 20106401280.

The previous prime is 20401413413. The next prime is 20401413443. The reversal of 20401413421 is 12431410402.

It is a happy number.

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 20401413421 - 2³ = 20401413413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20401413392 and 20401413401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401413481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137490 + ... + 244348.

It is an arithmetic number, because the mean of its divisors is an integer number (2587080600).

Almost surely, 2^20401413421 is an apocalyptic number.

It is an amenable number.

20401413421 is a deficient number, since it is larger than the sum of its proper divisors (295231379).

20401413421 is a wasteful number, since it uses less digits than its factorization.

20401413421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109619.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20401413421 its reverse (12431410402), we get a palindrome (32832823823).

The spelling of 20401413421 in words is "twenty billion, four hundred one million, four hundred thirteen thousand, four hundred twenty-one".