20355022013545 has 16 divisors (see below), whose sum is σ = 24771660440832. Its totient is φ = 16053624659520.

The previous prime is 20355022013537. The next prime is 20355022013561. The reversal of 20355022013545 is 54531022055302.

It is not a de Polignac number, because 20355022013545 - 2³ = 20355022013537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3649564 + ... + 7350466.

It is an arithmetic number, because the mean of its divisors is an integer number (1548228777552).

Almost surely, 2^{20355022013545} is an apocalyptic number.

It is an amenable number.

20355022013545 is a deficient number, since it is larger than the sum of its proper divisors (4416638427287).

20355022013545 is a wasteful number, since it uses less digits than its factorization.

20355022013545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3716472.

The product of its (nonzero) digits is 180000, while the sum is 37.

Adding to 20355022013545 its reverse (54531022055302), we get a palindrome (74886044068847).

The spelling of 20355022013545 in words is "twenty trillion, three hundred fifty-five billion, twenty-two million, thirteen thousand, five hundred forty-five".