20355102430 has 64 divisors (see below), whose sum is σ = 39829926528. Its totient is φ = 7445053440.

The previous prime is 20355102413. The next prime is 20355102451. The reversal of 20355102430 is 3420155302.

It is a junction number, because it is equal to n+sod(n) for n = 20355102395 and 20355102404.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 11415319 + ... + 11417101.

It is an arithmetic number, because the mean of its divisors is an integer number (622342602).

Almost surely, 2^20355102430 is an apocalyptic number.

20355102430 is a deficient number, since it is larger than the sum of its proper divisors (19474824098).

20355102430 is a wasteful number, since it uses less digits than its factorization.

20355102430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581.

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 20355102430 its reverse (3420155302), we get a palindrome (23775257732).

The spelling of 20355102430 in words is "twenty billion, three hundred fifty-five million, one hundred two thousand, four hundred thirty".