10243315420456 has 8 divisors (see below), whose sum is σ = 19206216413370. Its totient is φ = 5121657710224.

The previous prime is 10243315420423. The next prime is 10243315420463. The reversal of 10243315420456 is 65402451334201.

It can be written as a sum of positive squares in only one way, i.e., 5864466215556 + 4378849204900 = 2421666^2 + 2092570^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640207213771 + ... + 640207213786.

Almost surely, 2^{10243315420456} is an apocalyptic number.

It is an amenable number.

10243315420456 is a deficient number, since it is larger than the sum of its proper divisors (8962900992914).

10243315420456 is a wasteful number, since it uses less digits than its factorization.

10243315420456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280414427563 (or 1280414427559 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 10243315420456 its reverse (65402451334201), we get a palindrome (75645766754657).

The spelling of 10243315420456 in words is "ten trillion, two hundred forty-three billion, three hundred fifteen million, four hundred twenty thousand, four hundred fifty-six".