168263342621 has 8 divisors (see below), whose sum is σ = 183579710688. Its totient is φ = 152950258000.

The previous prime is 168263342573. The next prime is 168263342623. The reversal of 168263342621 is 126243362861.

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 168263342621 - 2⁶ = 168263342557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168263342623) 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, 713090 + ... + 919251.

It is an arithmetic number, because the mean of its divisors is an integer number (22947463836).

Almost surely, 2^168263342621 is an apocalyptic number.

168263342621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

168263342621 is a deficient number, since it is larger than the sum of its proper divisors (15316368067).

168263342621 is a wasteful number, since it uses less digits than its factorization.

168263342621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641723.

The product of its digits is 497664, while the sum is 44.

The spelling of 168263342621 in words is "one hundred sixty-eight billion, two hundred sixty-three million, three hundred forty-two thousand, six hundred twenty-one".