161626316662 has 8 divisors (see below), whose sum is σ = 243708792192. Its totient is φ = 80390052600.

The previous prime is 161626316651. The next prime is 161626316713. The reversal of 161626316662 is 266613626161.

It is a happy number.

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

It is a super-2 number, since 2×161626316662² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 211552389 + ... + 211553152.

It is an arithmetic number, because the mean of its divisors is an integer number (30463599024).

Almost surely, 2^161626316662 is an apocalyptic number.

161626316662 is a deficient number, since it is larger than the sum of its proper divisors (82082475530).

161626316662 is a wasteful number, since it uses less digits than its factorization.

161626316662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423105734.

The product of its digits is 559872, while the sum is 46.

The spelling of 161626316662 in words is "one hundred sixty-one billion, six hundred twenty-six million, three hundred sixteen thousand, six hundred sixty-two".