7912906167161 has 2 divisors, whose sum is σ = 7912906167162. Its totient is φ = 7912906167160.

The previous prime is 7912906167137. The next prime is 7912906167197. The reversal of 7912906167161 is 1617616092197.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7374048870400 + 538857296761 = 2715520^2 + 734069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7912906167161 is a prime.

It is a super-2 number, since 2×7912906167161² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7912906167097 and 7912906167106.

It is not a weakly prime, because it can be changed into another prime (7912906167461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3956453083580 + 3956453083581.

It is an arithmetic number, because the mean of its divisors is an integer number (3956453083581).

Almost surely, 2^{7912906167161} is an apocalyptic number.

It is an amenable number.

7912906167161 is a deficient number, since it is larger than the sum of its proper divisors (1).

7912906167161 is an equidigital number, since it uses as much as digits as its factorization.

7912906167161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1714608, while the sum is 56.

The spelling of 7912906167161 in words is "seven trillion, nine hundred twelve billion, nine hundred six million, one hundred sixty-seven thousand, one hundred sixty-one".