169401555607 has 2 divisors, whose sum is σ = 169401555608. Its totient is φ = 169401555606.

The previous prime is 169401555523. The next prime is 169401555629. The reversal of 169401555607 is 706555104961.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-169401555607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (169401565607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84700777803 + 84700777804.

It is an arithmetic number, because the mean of its divisors is an integer number (84700777804).

Almost surely, 2^169401555607 is an apocalyptic number.

169401555607 is a deficient number, since it is larger than the sum of its proper divisors (1).

169401555607 is an equidigital number, since it uses as much as digits as its factorization.

169401555607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134000, while the sum is 49.

The spelling of 169401555607 in words is "one hundred sixty-nine billion, four hundred one million, five hundred fifty-five thousand, six hundred seven".