8221518435 has 16 divisors (see below), whose sum is σ = 14166309024. Its totient is φ = 4047516672.

The previous prime is 8221518433. The next prime is 8221518449. The reversal of 8221518435 is 5348151228.

It is not a de Polignac number, because 8221518435 - 2¹ = 8221518433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 8221518393 and 8221518402.

It is not an unprimeable number, because it can be changed into a prime (8221518433) 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, 21080622 + ... + 21081011.

It is an arithmetic number, because the mean of its divisors is an integer number (885394314).

Almost surely, 2^8221518435 is an apocalyptic number.

8221518435 is a deficient number, since it is larger than the sum of its proper divisors (5944790589).

8221518435 is a wasteful number, since it uses less digits than its factorization.

8221518435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42161654.

The product of its digits is 76800, while the sum is 39.

The square root of 8221518435 is about 90672.5892152639. The cubic root of 8221518435 is about 2018.2920598144.

The spelling of 8221518435 in words is "eight billion, two hundred twenty-one million, five hundred eighteen thousand, four hundred thirty-five".