20356435552 has 12 divisors (see below), whose sum is σ = 40076732556. Its totient is φ = 10178217760.

The previous prime is 20356435459. The next prime is 20356435553. The reversal of 20356435552 is 25553465302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20356435553) by changing a digit.

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 as a sum of consecutive naturals, namely, 318069274 + ... + 318069337.

It is an arithmetic number, because the mean of its divisors is an integer number (3339727713).

Almost surely, 2^20356435552 is an apocalyptic number.

It is an amenable number.

20356435552 is a deficient number, since it is larger than the sum of its proper divisors (19720297004).

20356435552 is an equidigital number, since it uses as much as digits as its factorization.

20356435552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636138621 (or 636138613 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 40.

The spelling of 20356435552 in words is "twenty billion, three hundred fifty-six million, four hundred thirty-five thousand, five hundred fifty-two".