632106626861 has 4 divisors (see below), whose sum is σ = 632115815772. Its totient is φ = 632097437952.

The previous prime is 632106626839. The next prime is 632106626867. The reversal of 632106626861 is 168626601236.

It is a happy number.

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 608253368836 + 23853258025 = 779906^2 + 154445^2 .

It is a cyclic number.

It is not a de Polignac number, because 632106626861 - 2¹⁰ = 632106625837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (632106626867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4490486 + ... + 4629111.

It is an arithmetic number, because the mean of its divisors is an integer number (158028953943).

Almost surely, 2^632106626861 is an apocalyptic number.

It is an amenable number.

632106626861 is a deficient number, since it is larger than the sum of its proper divisors (9188911).

632106626861 is an equidigital number, since it uses as much as digits as its factorization.

632106626861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9188910.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 632106626861 in words is "six hundred thirty-two billion, one hundred six million, six hundred twenty-six thousand, eight hundred sixty-one".