167613972541 has 2 divisors, whose sum is σ = 167613972542. Its totient is φ = 167613972540.

The previous prime is 167613972517. The next prime is 167613972563. The reversal of 167613972541 is 145279316761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167579703225 + 34269316 = 409365^2 + 5854^2 .

It is a cyclic number.

It is not a de Polignac number, because 167613972541 - 2⁷ = 167613972413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167613972241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83806986270 + 83806986271.

It is an arithmetic number, because the mean of its divisors is an integer number (83806986271).

Almost surely, 2^167613972541 is an apocalyptic number.

It is an amenable number.

167613972541 is a deficient number, since it is larger than the sum of its proper divisors (1).

167613972541 is an equidigital number, since it uses as much as digits as its factorization.

167613972541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 52.

The spelling of 167613972541 in words is "one hundred sixty-seven billion, six hundred thirteen million, nine hundred seventy-two thousand, five hundred forty-one".