106443261506 has 4 divisors (see below), whose sum is σ = 159664892262. Its totient is φ = 53221630752.

The previous prime is 106443261487. The next prime is 106443261521. The reversal of 106443261506 is 605162344601.

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

It can be written as a sum of positive squares in only one way, i.e., 80565713281 + 25877548225 = 283841^2 + 160865^2 .

It is a super-2 number, since 2×106443261506² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 106443261506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26610815375 + ... + 26610815378.

Almost surely, 2^106443261506 is an apocalyptic number.

106443261506 is a deficient number, since it is larger than the sum of its proper divisors (53221630756).

106443261506 is an equidigital number, since it uses as much as digits as its factorization.

106443261506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53221630755.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 106443261506 in words is "one hundred six billion, four hundred forty-three million, two hundred sixty-one thousand, five hundred six".