20401132430 has 16 divisors (see below), whose sum is σ = 41968044000. Its totient is φ = 6994673952.

The previous prime is 20401132399. The next prime is 20401132501. The reversal of 20401132430 is 3423110402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145722305 + ... + 145722444.

It is an arithmetic number, because the mean of its divisors is an integer number (2623002750).

Almost surely, 2^20401132430 is an apocalyptic number.

20401132430 is an abundant number, since it is smaller than the sum of its proper divisors (21566911570).

20401132430 is a wasteful number, since it uses less digits than its factorization.

20401132430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291444763.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20401132430 its reverse (3423110402), we get a palindrome (23824242832).

The spelling of 20401132430 in words is "twenty billion, four hundred one million, one hundred thirty-two thousand, four hundred thirty".