167856115901 has 2 divisors, whose sum is σ = 167856115902. Its totient is φ = 167856115900.

The previous prime is 167856115879. The next prime is 167856115909. The reversal of 167856115901 is 109511658761.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109955244025 + 57900871876 = 331595^2 + 240626^2 .

It is an emirp because it is prime and its reverse (109511658761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 167856115901 - 2³⁴ = 150676246717 is a prime.

It is a super-3 number, since 3×167856115901³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 167856115901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167856115909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83928057950 + 83928057951.

It is an arithmetic number, because the mean of its divisors is an integer number (83928057951).

Almost surely, 2^167856115901 is an apocalyptic number.

It is an amenable number.

167856115901 is a deficient number, since it is larger than the sum of its proper divisors (1).

167856115901 is an equidigital number, since it uses as much as digits as its factorization.

167856115901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 50.

The spelling of 167856115901 in words is "one hundred sixty-seven billion, eight hundred fifty-six million, one hundred fifteen thousand, nine hundred one".