8420063413865 has 16 divisors (see below), whose sum is σ = 10242883728000. Its totient is φ = 6643783291392.

The previous prime is 8420063413829. The next prime is 8420063413891. The reversal of 8420063413865 is 5683143600248.

It is a happy number.

It is not a de Polignac number, because 8420063413865 - 2³⁶ = 8351343937129 is a prime.

It is a super-3 number, since 3×8420063413865³ (a number of 40 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16687400 + ... + 17184569.

It is an arithmetic number, because the mean of its divisors is an integer number (640180233000).

Almost surely, 2^{8420063413865} is an apocalyptic number.

It is an amenable number.

8420063413865 is a deficient number, since it is larger than the sum of its proper divisors (1822820314135).

8420063413865 is a wasteful number, since it uses less digits than its factorization.

8420063413865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33872656.

The product of its (nonzero) digits is 3317760, while the sum is 50.

The spelling of 8420063413865 in words is "eight trillion, four hundred twenty billion, sixty-three million, four hundred thirteen thousand, eight hundred sixty-five".