20200102545 has 16 divisors (see below), whose sum is σ = 36937330560. Its totient is φ = 9234332544.

The previous prime is 20200102543. The next prime is 20200102553. The reversal of 20200102545 is 54520100202.

It is a happy number.

It is not a de Polignac number, because 20200102545 - 2¹ = 20200102543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20200102543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96190860 + ... + 96191069.

It is an arithmetic number, because the mean of its divisors is an integer number (2308583160).

Almost surely, 2^20200102545 is an apocalyptic number.

It is an amenable number.

20200102545 is a deficient number, since it is larger than the sum of its proper divisors (16737228015).

20200102545 is a wasteful number, since it uses less digits than its factorization.

20200102545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192381944.

The product of its (nonzero) digits is 800, while the sum is 21.

Adding to 20200102545 its reverse (54520100202), we get a palindrome (74720202747).

The spelling of 20200102545 in words is "twenty billion, two hundred million, one hundred two thousand, five hundred forty-five".