20105332355 has 16 divisors (see below), whose sum is σ = 25602082560. Its totient is φ = 15124183008.

The previous prime is 20105332349. The next prime is 20105332361. The reversal of 20105332355 is 55323350102.

It is an interprime number because it is at equal distance from previous prime (20105332349) and next prime (20105332361).

It is a cyclic number.

It is not a de Polignac number, because 20105332355 - 2⁴ = 20105332339 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1474817 + ... + 1488386.

It is an arithmetic number, because the mean of its divisors is an integer number (1600130160).

Almost surely, 2^20105332355 is an apocalyptic number.

20105332355 is a deficient number, since it is larger than the sum of its proper divisors (5496750205).

20105332355 is a wasteful number, since it uses less digits than its factorization.

20105332355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2963290.

The product of its (nonzero) digits is 13500, while the sum is 29.

Adding to 20105332355 its reverse (55323350102), we get a palindrome (75428682457).

The spelling of 20105332355 in words is "twenty billion, one hundred five million, three hundred thirty-two thousand, three hundred fifty-five".