167623287617657 has 2 divisors, whose sum is σ = 167623287617658. Its totient is φ = 167623287617656.

The previous prime is 167623287617633. The next prime is 167623287617729. The reversal of 167623287617657 is 756716782326761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167601272180281 + 22015437376 = 12946091^2 + 148376^2 .

It is a cyclic number.

It is not a de Polignac number, because 167623287617657 - 2²² = 167623283423353 is a prime.

It is not a weakly prime, because it can be changed into another prime (167623287617627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83811643808828 + 83811643808829.

It is an arithmetic number, because the mean of its divisors is an integer number (83811643808829).

Almost surely, 2^{167623287617657} is an apocalyptic number.

It is an amenable number.

167623287617657 is a deficient number, since it is larger than the sum of its proper divisors (1).

167623287617657 is an equidigital number, since it uses as much as digits as its factorization.

167623287617657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1493614080, while the sum is 74.

The spelling of 167623287617657 in words is "one hundred sixty-seven trillion, six hundred twenty-three billion, two hundred eighty-seven million, six hundred seventeen thousand, six hundred fifty-seven".