20336445501145 has 16 divisors (see below), whose sum is σ = 24616370423808. Its totient is φ = 16127612524800.

The previous prime is 20336445501109. The next prime is 20336445501149. The reversal of 20336445501145 is 54110554463302.

It is not a de Polignac number, because 20336445501145 - 2⁷ = 20336445501017 is a prime.

It is a super-2 number, since 2×20336445501145² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20336445501149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12570379 + ... + 14095648.

It is an arithmetic number, because the mean of its divisors is an integer number (1538523151488).

Almost surely, 2^{20336445501145} is an apocalyptic number.

It is an amenable number.

20336445501145 is a deficient number, since it is larger than the sum of its proper divisors (4279924922663).

20336445501145 is a wasteful number, since it uses less digits than its factorization.

20336445501145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26667360.

The product of its (nonzero) digits is 864000, while the sum is 43.

Adding to 20336445501145 its reverse (54110554463302), we get a palindrome (74446999964447).

The spelling of 20336445501145 in words is "twenty trillion, three hundred thirty-six billion, four hundred forty-five million, five hundred one thousand, one hundred forty-five".