166624325551 has 8 divisors (see below), whose sum is σ = 167052144960. Its totient is φ = 166196606592.

The previous prime is 166624325531. The next prime is 166624325591. The reversal of 166624325551 is 155523426661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166624325551 - 2⁵ = 166624325519 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 (166624325531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4198266 + ... + 4237768.

It is an arithmetic number, because the mean of its divisors is an integer number (20881518120).

Almost surely, 2^166624325551 is an apocalyptic number.

166624325551 is a deficient number, since it is larger than the sum of its proper divisors (427819409).

166624325551 is a wasteful number, since it uses less digits than its factorization.

166624325551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50225.

The product of its digits is 1296000, while the sum is 46.

The spelling of 166624325551 in words is "one hundred sixty-six billion, six hundred twenty-four million, three hundred twenty-five thousand, five hundred fifty-one".