20005160410465 has 16 divisors (see below), whose sum is σ = 24111505314000. Its totient is φ = 15933922578432.

The previous prime is 20005160410463. The next prime is 20005160410471. The reversal of 20005160410465 is 56401406150002.

It can be written as a sum of positive squares in 8 ways, for example, as 313825160401 + 19691335250064 = 560201^2 + 4437492^2 .

It is a cyclic number.

It is not a de Polignac number, because 20005160410465 - 2¹ = 20005160410463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20005160410465.

It is not an unprimeable number, because it can be changed into a prime (20005160410463) 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, 69069589 + ... + 69358621.

It is an arithmetic number, because the mean of its divisors is an integer number (1506969082125).

Almost surely, 2^{20005160410465} is an apocalyptic number.

It is an amenable number.

20005160410465 is a deficient number, since it is larger than the sum of its proper divisors (4106344903535).

20005160410465 is a wasteful number, since it uses less digits than its factorization.

20005160410465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349716.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 20005160410465 its reverse (56401406150002), we get a palindrome (76406566560467).

The spelling of 20005160410465 in words is "twenty trillion, five billion, one hundred sixty million, four hundred ten thousand, four hundred sixty-five".