106138605511 has 4 divisors (see below), whose sum is σ = 112382052912. Its totient is φ = 99895158112.

The previous prime is 106138605493. The next prime is 106138605533. The reversal of 106138605511 is 115506831601.

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

It is a cyclic number.

It is not a de Polignac number, because 106138605511 - 2²³ = 106130216903 is a prime.

It is a super-2 number, since 2×106138605511² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106138602511) 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, 3121723675 + ... + 3121723708.

It is an arithmetic number, because the mean of its divisors is an integer number (28095513228).

Almost surely, 2^106138605511 is an apocalyptic number.

106138605511 is a deficient number, since it is larger than the sum of its proper divisors (6243447401).

106138605511 is an equidigital number, since it uses as much as digits as its factorization.

106138605511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6243447400.

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 106138605511 in words is "one hundred six billion, one hundred thirty-eight million, six hundred five thousand, five hundred eleven".