20360143212465 has 48 divisors (see below), whose sum is σ = 37932355330560. Its totient is φ = 9298269227520.

The previous prime is 20360143212361. The next prime is 20360143212467. The reversal of 20360143212465 is 56421234106302.

It is not a de Polignac number, because 20360143212465 - 2⁷ = 20360143212337 is a prime.

It is a super-2 number, since 2×20360143212465² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20360143212467) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12985281 + ... + 14468510.

It is an arithmetic number, because the mean of its divisors is an integer number (790257402720).

Almost surely, 2^{20360143212465} is an apocalyptic number.

It is an amenable number.

20360143212465 is a deficient number, since it is larger than the sum of its proper divisors (17572212118095).

20360143212465 is a wasteful number, since it uses less digits than its factorization.

20360143212465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27454822 (or 27454815 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

Adding to 20360143212465 its reverse (56421234106302), we get a palindrome (76781377318767).

The spelling of 20360143212465 in words is "twenty trillion, three hundred sixty billion, one hundred forty-three million, two hundred twelve thousand, four hundred sixty-five".