106838168747509 has 4 divisors (see below), whose sum is σ = 109725686821804. Its totient is φ = 103950650673216.

The previous prime is 106838168747507. The next prime is 106838168747549. The reversal of 106838168747509 is 905747861838601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 98920867134609 + 7917301612900 = 9945897^2 + 2813770^2 .

It is a cyclic number.

It is not a de Polignac number, because 106838168747509 - 2¹ = 106838168747507 is a prime.

It is a super-2 number, since 2×106838168747509² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106838168747507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1443759037092 + ... + 1443759037165.

It is an arithmetic number, because the mean of its divisors is an integer number (27431421705451).

Almost surely, 2^{106838168747509} is an apocalyptic number.

It is an amenable number.

106838168747509 is a deficient number, since it is larger than the sum of its proper divisors (2887518074295).

106838168747509 is an equidigital number, since it uses as much as digits as its factorization.

106838168747509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887518074294.

The product of its (nonzero) digits is 487710720, while the sum is 73.

The spelling of 106838168747509 in words is "one hundred six trillion, eight hundred thirty-eight billion, one hundred sixty-eight million, seven hundred forty-seven thousand, five hundred nine".