343221651672 has 128 divisors (see below), whose sum is σ = 914268600000. Its totient is φ = 107165915136.

The previous prime is 343221651631. The next prime is 343221651719. The reversal of 343221651672 is 276156122343.

It is a super-2 number, since 2×343221651672² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8968354 + ... + 9006542.

Almost surely, 2^343221651672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 343221651672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (457134300000).

343221651672 is an abundant number, since it is smaller than the sum of its proper divisors (571046948328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

343221651672 is a wasteful number, since it uses less digits than its factorization.

343221651672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38613 (or 38609 counting only the distinct ones).

The product of its digits is 362880, while the sum is 42.

The spelling of 343221651672 in words is "three hundred forty-three billion, two hundred twenty-one million, six hundred fifty-one thousand, six hundred seventy-two".