20133412545 has 64 divisors (see below), whose sum is σ = 36238648320. Its totient is φ = 9493843968.

The previous prime is 20133412543. The next prime is 20133412553. The reversal of 20133412545 is 54521433102.

It is not a de Polignac number, because 20133412545 - 2¹ = 20133412543 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20133412543) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 236824 + ... + 310406.

It is an arithmetic number, because the mean of its divisors is an integer number (566228880).

Almost surely, 2^20133412545 is an apocalyptic number.

It is an amenable number.

20133412545 is a deficient number, since it is larger than the sum of its proper divisors (16105235775).

20133412545 is a wasteful number, since it uses less digits than its factorization.

20133412545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73674.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 20133412545 its reverse (54521433102), we get a palindrome (74654845647).

The spelling of 20133412545 in words is "twenty billion, one hundred thirty-three million, four hundred twelve thousand, five hundred forty-five".