100644166325 has 24 divisors (see below), whose sum is σ = 126124818120. Its totient is φ = 79660339200.

The previous prime is 100644166313. The next prime is 100644166361. The reversal of 100644166325 is 523661446001.

It can be written as a sum of positive squares in 12 ways, for example, as 78360245041 + 22283921284 = 279929^2 + 149278^2 .

It is not a de Polignac number, because 100644166325 - 2¹⁶ = 100644100789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13743665 + ... + 13750985.

It is an arithmetic number, because the mean of its divisors is an integer number (5255200755).

Almost surely, 2^100644166325 is an apocalyptic number.

It is an amenable number.

100644166325 is a deficient number, since it is larger than the sum of its proper divisors (25480651795).

100644166325 is an equidigital number, since it uses as much as digits as its factorization.

100644166325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13097 (or 13092 counting only the distinct ones).

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

The spelling of 100644166325 in words is "one hundred billion, six hundred forty-four million, one hundred sixty-six thousand, three hundred twenty-five".