68278455541 has 12 divisors (see below), whose sum is σ = 69119145732. Its totient is φ = 67447344384.

The previous prime is 68278455527. The next prime is 68278455571. The reversal of 68278455541 is 14555487286.

It can be written as a sum of positive squares in 6 ways, for example, as 15920100 + 68262535441 = 3990^2 + 261271^2 .

It is not a de Polignac number, because 68278455541 - 2⁹ = 68278455029 is a prime.

It is a super-3 number, since 3×68278455541³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68278455521) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3995371 + ... + 4012423.

It is an arithmetic number, because the mean of its divisors is an integer number (5759928811).

Almost surely, 2^68278455541 is an apocalyptic number.

It is an amenable number.

68278455541 is a deficient number, since it is larger than the sum of its proper divisors (840690191).

68278455541 is a wasteful number, since it uses less digits than its factorization.

68278455541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17608 (or 17499 counting only the distinct ones).

The product of its digits is 10752000, while the sum is 55.

It can be divided in two parts, 6827845 and 5541, that added together give a palindrome (6833386).

The spelling of 68278455541 in words is "sixty-eight billion, two hundred seventy-eight million, four hundred fifty-five thousand, five hundred forty-one".