167649442651 has 2 divisors, whose sum is σ = 167649442652. Its totient is φ = 167649442650.

The previous prime is 167649442607. The next prime is 167649442661. The reversal of 167649442651 is 156244946761.

It is a strong prime.

It is an emirp because it is prime and its reverse (156244946761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 167649442651 - 2²⁹ = 167112571739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 167649442592 and 167649442601.

It is not a weakly prime, because it can be changed into another prime (167649442601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83824721325 + 83824721326.

It is an arithmetic number, because the mean of its divisors is an integer number (83824721326).

Almost surely, 2^167649442651 is an apocalyptic number.

167649442651 is a deficient number, since it is larger than the sum of its proper divisors (1).

167649442651 is an equidigital number, since it uses as much as digits as its factorization.

167649442651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 55.

The spelling of 167649442651 in words is "one hundred sixty-seven billion, six hundred forty-nine million, four hundred forty-two thousand, six hundred fifty-one".