106505637523 has 4 divisors (see below), whose sum is σ = 108310817880. Its totient is φ = 104700457168.

The previous prime is 106505637521. The next prime is 106505637529. The reversal of 106505637523 is 325736505601.

It is a happy number.

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 106505637523 - 2¹ = 106505637521 is a prime.

It is a super-2 number, since 2×106505637523² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 106505637523.

It is not an unprimeable number, because it can be changed into a prime (106505637521) 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, 902590090 + ... + 902590207.

It is an arithmetic number, because the mean of its divisors is an integer number (27077704470).

Almost surely, 2^106505637523 is an apocalyptic number.

106505637523 is a deficient number, since it is larger than the sum of its proper divisors (1805180357).

106505637523 is an equidigital number, since it uses as much as digits as its factorization.

106505637523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805180356.

The product of its (nonzero) digits is 567000, while the sum is 43.

The spelling of 106505637523 in words is "one hundred six billion, five hundred five million, six hundred thirty-seven thousand, five hundred twenty-three".