8445402515 has 12 divisors (see below), whose sum is σ = 11139556512. Its totient is φ = 6142110480.

The previous prime is 8445402503. The next prime is 8445402517. The reversal of 8445402515 is 5152045448.

It is a happy number.

It is not a de Polignac number, because 8445402515 - 2¹⁶ = 8445336979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8445402517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6979067 + ... + 6980276.

It is an arithmetic number, because the mean of its divisors is an integer number (928296376).

Almost surely, 2^8445402515 is an apocalyptic number.

8445402515 is a deficient number, since it is larger than the sum of its proper divisors (2694153997).

8445402515 is a wasteful number, since it uses less digits than its factorization.

8445402515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13959370 (or 13959359 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 38.

The square root of 8445402515 is about 91898.8711301722. The cubic root of 8445402515 is about 2036.4485911880.

The spelling of 8445402515 in words is "eight billion, four hundred forty-five million, four hundred two thousand, five hundred fifteen".