20463250561545 has 128 divisors (see below), whose sum is σ = 36040802992128. Its totient is φ = 9832299724800.

The previous prime is 20463250561541. The next prime is 20463250561577. The reversal of 20463250561545 is 54516505236402.

It is not a de Polignac number, because 20463250561545 - 2² = 20463250561541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20463250561494 and 20463250561503.

It is not an unprimeable number, because it can be changed into a prime (20463250561541) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12577289022 + ... + 12577290648.

It is an arithmetic number, because the mean of its divisors is an integer number (281568773376).

Almost surely, 2^{20463250561545} is an apocalyptic number.

It is an amenable number.

20463250561545 is a deficient number, since it is larger than the sum of its proper divisors (15577552430583).

20463250561545 is a wasteful number, since it uses less digits than its factorization.

20463250561545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3103.

The product of its (nonzero) digits is 4320000, while the sum is 48.

Adding to 20463250561545 its reverse (54516505236402), we get a palindrome (74979755797947).

The spelling of 20463250561545 in words is "twenty trillion, four hundred sixty-three billion, two hundred fifty million, five hundred sixty-one thousand, five hundred forty-five".