401061602157169 has 2 divisors, whose sum is σ = 401061602157170. Its totient is φ = 401061602157168.

The previous prime is 401061602157131. The next prime is 401061602157193. The reversal of 401061602157169 is 961751206160104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399853493417569 + 1208108739600 = 19996337^2 + 1099140^2 .

It is a cyclic number.

It is not a de Polignac number, because 401061602157169 - 2¹¹ = 401061602155121 is a prime.

It is a super-2 number, since 2×401061602157169² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401061602157569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200530801078584 + 200530801078585.

It is an arithmetic number, because the mean of its divisors is an integer number (200530801078585).

Almost surely, 2^{401061602157169} is an apocalyptic number.

It is an amenable number.

401061602157169 is a deficient number, since it is larger than the sum of its proper divisors (1).

401061602157169 is an equidigital number, since it uses as much as digits as its factorization.

401061602157169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 401061602157169 in words is "four hundred one trillion, sixty-one billion, six hundred two million, one hundred fifty-seven thousand, one hundred sixty-nine".