68511279445 has 8 divisors (see below), whose sum is σ = 93958326144. Its totient is φ = 46979163024.

The previous prime is 68511279407. The next prime is 68511279451. The reversal of 68511279445 is 54497211586.

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 68511279445 - 2³³ = 59921344853 is a prime.

It is a super-2 number, since 2×68511279445² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68511279392 and 68511279401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 978732529 + ... + 978732598.

It is an arithmetic number, because the mean of its divisors is an integer number (11744790768).

Almost surely, 2^68511279445 is an apocalyptic number.

It is an amenable number.

68511279445 is a deficient number, since it is larger than the sum of its proper divisors (25447046699).

68511279445 is a wasteful number, since it uses less digits than its factorization.

68511279445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957465139.

The product of its digits is 2419200, while the sum is 52.

The spelling of 68511279445 in words is "sixty-eight billion, five hundred eleven million, two hundred seventy-nine thousand, four hundred forty-five".