829639161997 has 2 divisors, whose sum is σ = 829639161998. Its totient is φ = 829639161996.

The previous prime is 829639161913. The next prime is 829639162013. The reversal of 829639161997 is 799161936928.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 819521015076 + 10118146921 = 905274^2 + 100589^2 .

It is a cyclic number.

It is not a de Polignac number, because 829639161997 - 2¹¹ = 829639159949 is a prime.

It is a super-2 number, since 2×829639161997² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (829639161497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414819580998 + 414819580999.

It is an arithmetic number, because the mean of its divisors is an integer number (414819580999).

Almost surely, 2^829639161997 is an apocalyptic number.

It is an amenable number.

829639161997 is a deficient number, since it is larger than the sum of its proper divisors (1).

829639161997 is an equidigital number, since it uses as much as digits as its factorization.

829639161997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79361856, while the sum is 70.

The spelling of 829639161997 in words is "eight hundred twenty-nine billion, six hundred thirty-nine million, one hundred sixty-one thousand, nine hundred ninety-seven".