20500377045 has 16 divisors (see below), whose sum is σ = 33498489600. Its totient is φ = 10700905664.

The previous prime is 20500377041. The next prime is 20500377049. The reversal of 20500377045 is 54077300502.

It is an interprime number because it is at equal distance from previous prime (20500377041) and next prime (20500377049).

It is a cyclic number.

It is not a de Polignac number, because 20500377045 - 2² = 20500377041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20500376997 and 20500377015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20500377041) 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, 14538570 + ... + 14539979.

It is an arithmetic number, because the mean of its divisors is an integer number (2093655600).

Almost surely, 2^20500377045 is an apocalyptic number.

It is an amenable number.

20500377045 is a deficient number, since it is larger than the sum of its proper divisors (12998112555).

20500377045 is a wasteful number, since it uses less digits than its factorization.

20500377045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29078604.

The product of its (nonzero) digits is 29400, while the sum is 33.

Adding to 20500377045 its reverse (54077300502), we get a palindrome (74577677547).

The spelling of 20500377045 in words is "twenty billion, five hundred million, three hundred seventy-seven thousand, forty-five".