68636755870 has 8 divisors (see below), whose sum is σ = 123546160584. Its totient is φ = 27454702344.

The previous prime is 68636755843. The next prime is 68636755883. The reversal of 68636755870 is 7855763686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×68636755870² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68636755799 and 68636755808.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3431837784 + ... + 3431837803.

It is an arithmetic number, because the mean of its divisors is an integer number (15443270073).

Almost surely, 2^68636755870 is an apocalyptic number.

68636755870 is a deficient number, since it is larger than the sum of its proper divisors (54909404714).

68636755870 is a wasteful number, since it uses less digits than its factorization.

68636755870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6863675594.

The product of its (nonzero) digits is 50803200, while the sum is 61.

The spelling of 68636755870 in words is "sixty-eight billion, six hundred thirty-six million, seven hundred fifty-five thousand, eight hundred seventy".