162651520117 has 2 divisors, whose sum is σ = 162651520118. Its totient is φ = 162651520116.

The previous prime is 162651520091. The next prime is 162651520121. The reversal of 162651520117 is 711025156261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139632258276 + 23019261841 = 373674^2 + 151721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162651520117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162651520217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81325760058 + 81325760059.

It is an arithmetic number, because the mean of its divisors is an integer number (81325760059).

Almost surely, 2^162651520117 is an apocalyptic number.

It is an amenable number.

162651520117 is a deficient number, since it is larger than the sum of its proper divisors (1).

162651520117 is an equidigital number, since it uses as much as digits as its factorization.

162651520117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 37.

Adding to 162651520117 its reverse (711025156261), we get a palindrome (873676676378).

The spelling of 162651520117 in words is "one hundred sixty-two billion, six hundred fifty-one million, five hundred twenty thousand, one hundred seventeen".