20413154065465 has 16 divisors (see below), whose sum is σ = 28157004592128. Its totient is φ = 13916680422336.

The previous prime is 20413154065463. The next prime is 20413154065477. The reversal of 20413154065465 is 56456045131402.

It is a cyclic number.

It is not a de Polignac number, because 20413154065465 - 2¹ = 20413154065463 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20413154065463) 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, 1685638377 + ... + 1685650486.

It is an arithmetic number, because the mean of its divisors is an integer number (1759812787008).

Almost surely, 2^{20413154065465} is an apocalyptic number.

It is an amenable number.

20413154065465 is a deficient number, since it is larger than the sum of its proper divisors (7743850526663).

20413154065465 is a wasteful number, since it uses less digits than its factorization.

20413154065465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371289048.

The product of its (nonzero) digits is 1728000, while the sum is 46.

Adding to 20413154065465 its reverse (56456045131402), we get a palindrome (76869199196867).

The spelling of 20413154065465 in words is "twenty trillion, four hundred thirteen billion, one hundred fifty-four million, sixty-five thousand, four hundred sixty-five".