20355201545 has 8 divisors (see below), whose sum is σ = 27915705024. Its totient is φ = 13957852464.

The previous prime is 20355201539. The next prime is 20355201553. The reversal of 20355201545 is 54510255302.

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 20355201545 - 2¹⁸ = 20354939401 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 290788559 + ... + 290788628.

It is an arithmetic number, because the mean of its divisors is an integer number (3489463128).

Almost surely, 2^20355201545 is an apocalyptic number.

It is an amenable number.

20355201545 is a deficient number, since it is larger than the sum of its proper divisors (7560503479).

20355201545 is an equidigital number, since it uses as much as digits as its factorization.

20355201545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581577199.

The product of its (nonzero) digits is 30000, while the sum is 32.

Adding to 20355201545 its reverse (54510255302), we get a palindrome (74865456847).

The spelling of 20355201545 in words is "twenty billion, three hundred fifty-five million, two hundred one thousand, five hundred forty-five".