42221013615 has 32 divisors (see below), whose sum is σ = 81883180800. Its totient is φ = 20470793760.

The previous prime is 42221013607. The next prime is 42221013617. The reversal of 42221013615 is 51631012224.

42221013615 is a `hidden beast` number, since 4 + 2 + 22 + 10 + 13 + 615 = 666.

42221013615 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42221013615 - 2³ = 42221013607 is a prime.

It is a super-2 number, since 2×42221013615² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42221013617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14214345 + ... + 14217314.

It is an arithmetic number, because the mean of its divisors is an integer number (2558849400).

Almost surely, 2^42221013615 is an apocalyptic number.

42221013615 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42221013615 is a deficient number, since it is larger than the sum of its proper divisors (39662167185).

42221013615 is a wasteful number, since it uses less digits than its factorization.

42221013615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28431684 (or 28431678 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 42221013615 its reverse (51631012224), we get a palindrome (93852025839).

The spelling of 42221013615 in words is "forty-two billion, two hundred twenty-one million, thirteen thousand, six hundred fifteen".