68458837860 has 108 divisors (see below), whose sum is σ = 241561930428. Its totient is φ = 15647732352.

The previous prime is 68458837847. The next prime is 68458837877. The reversal of 68458837860 is 6873885486.

It can be written as a sum of positive squares in 2 ways, for example, as 17039647296 + 51419190564 = 130536^2 + 226758^2 .

It is a super-2 number, since 2×68458837860² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 3872067 + ... + 3889706.

It is an arithmetic number, because the mean of its divisors is an integer number (2236684541).

Almost surely, 2^68458837860 is an apocalyptic number.

68458837860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68458837860 is an abundant number, since it is smaller than the sum of its proper divisors (173103092568).

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

68458837860 is a wasteful number, since it uses less digits than its factorization.

68458837860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7761802 (or 7761790 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 63.

The spelling of 68458837860 in words is "sixty-eight billion, four hundred fifty-eight million, eight hundred thirty-seven thousand, eight hundred sixty".