20530401102445 has 16 divisors (see below), whose sum is σ = 28092277347120. Its totient is φ = 14269093254144.

The previous prime is 20530401102443. The next prime is 20530401102473. The reversal of 20530401102445 is 54420110403502.

It can be written as a sum of positive squares in 8 ways, for example, as 336639002436 + 20193762100009 = 580206^2 + 4493747^2 .

It is a cyclic number.

It is not a de Polignac number, because 20530401102445 - 2¹ = 20530401102443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20530401102443) 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, 9289773150 + ... + 9289775359.

It is an arithmetic number, because the mean of its divisors is an integer number (1755767334195).

Almost surely, 2^{20530401102445} is an apocalyptic number.

It is an amenable number.

20530401102445 is a deficient number, since it is larger than the sum of its proper divisors (7561876244675).

20530401102445 is a wasteful number, since it uses less digits than its factorization.

20530401102445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18579548544.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 20530401102445 its reverse (54420110403502), we get a palindrome (74950511505947).

The spelling of 20530401102445 in words is "twenty trillion, five hundred thirty billion, four hundred one million, one hundred two thousand, four hundred forty-five".