166464355654 has 4 divisors (see below), whose sum is σ = 249696533484. Its totient is φ = 83232177826.

The previous prime is 166464355633. The next prime is 166464355661. The reversal of 166464355654 is 456553464661.

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

It is a junction number, because it is equal to n+sod(n) for n = 166464355595 and 166464355604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41616088912 + ... + 41616088915.

It is an arithmetic number, because the mean of its divisors is an integer number (62424133371).

Almost surely, 2^166464355654 is an apocalyptic number.

166464355654 is a deficient number, since it is larger than the sum of its proper divisors (83232177830).

166464355654 is an equidigital number, since it uses as much as digits as its factorization.

166464355654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83232177829.

The product of its digits is 31104000, while the sum is 55.

The spelling of 166464355654 in words is "one hundred sixty-six billion, four hundred sixty-four million, three hundred fifty-five thousand, six hundred fifty-four".