615422206113161 has 16 divisors (see below), whose sum is σ = 634347481080336. Its totient is φ = 596617646754816.

The previous prime is 615422206112941. The next prime is 615422206113203. The reversal of 615422206113161 is 161311602224516.

It can be written as a sum of positive squares in 8 ways, for example, as 55084376953225 + 560337829159936 = 7421885^2 + 23671456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-615422206113161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (615422206143161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665076965 + ... + 666001661.

It is an arithmetic number, because the mean of its divisors is an integer number (39646717567521).

Almost surely, 2^{615422206113161} is an apocalyptic number.

It is an amenable number.

615422206113161 is a deficient number, since it is larger than the sum of its proper divisors (18925274967175).

615422206113161 is a wasteful number, since it uses less digits than its factorization.

615422206113161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989948.

The product of its (nonzero) digits is 103680, while the sum is 41.

Adding to 615422206113161 its reverse (161311602224516), we get a palindrome (776733808337677).

The spelling of 615422206113161 in words is "six hundred fifteen trillion, four hundred twenty-two billion, two hundred six million, one hundred thirteen thousand, one hundred sixty-one".