68216300638 has 4 divisors (see below), whose sum is σ = 102324450960. Its totient is φ = 34108150318.

The previous prime is 68216300623. The next prime is 68216300743. The reversal of 68216300638 is 83600361286.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×68216300638³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68216300594 and 68216300603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17054075158 + ... + 17054075161.

It is an arithmetic number, because the mean of its divisors is an integer number (25581112740).

Almost surely, 2^68216300638 is an apocalyptic number.

68216300638 is a deficient number, since it is larger than the sum of its proper divisors (34108150322).

68216300638 is a wasteful number, since it uses less digits than its factorization.

68216300638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34108150321.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 68216300638 in words is "sixty-eight billion, two hundred sixteen million, three hundred thousand, six hundred thirty-eight".