68212617453 has 32 divisors (see below), whose sum is σ = 107238816000. Its totient is φ = 42704621568.

The previous prime is 68212617439. The next prime is 68212617479. The reversal of 68212617453 is 35471621286.

68212617453 is a `hidden beast` number, since 6 + 8 + 21 + 2 + 617 + 4 + 5 + 3 = 666.

It is not a de Polignac number, because 68212617453 - 2¹⁰ = 68212616429 is a prime.

It is a super-2 number, since 2×68212617453² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68212617399 and 68212617408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68212617433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40600 + ... + 371582.

It is an arithmetic number, because the mean of its divisors is an integer number (3351213000).

Almost surely, 2^68212617453 is an apocalyptic number.

It is an amenable number.

68212617453 is a deficient number, since it is larger than the sum of its proper divisors (39026198547).

68212617453 is a wasteful number, since it uses less digits than its factorization.

68212617453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331458 (or 331452 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 68212617453 in words is "sixty-eight billion, two hundred twelve million, six hundred seventeen thousand, four hundred fifty-three".