106318561997 has 2 divisors, whose sum is σ = 106318561998. Its totient is φ = 106318561996.

The previous prime is 106318561949. The next prime is 106318562033. The reversal of 106318561997 is 799165813601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71257497481 + 35061064516 = 266941^2 + 187246^2 .

It is an emirp because it is prime and its reverse (799165813601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 106318561997 - 2²⁴ = 106301784781 is a prime.

It is a super-2 number, since 2×106318561997² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106318567997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53159280998 + 53159280999.

It is an arithmetic number, because the mean of its divisors is an integer number (53159280999).

Almost surely, 2^106318561997 is an apocalyptic number.

It is an amenable number.

106318561997 is a deficient number, since it is larger than the sum of its proper divisors (1).

106318561997 is an equidigital number, since it uses as much as digits as its factorization.

106318561997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 56.

The spelling of 106318561997 in words is "one hundred six billion, three hundred eighteen million, five hundred sixty-one thousand, nine hundred ninety-seven".