68840820238 has 8 divisors (see below), whose sum is σ = 109335420432. Its totient is φ = 32395680096.

The previous prime is 68840820149. The next prime is 68840820271. The reversal of 68840820238 is 83202804886.

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

It is a junction number, because it is equal to n+sod(n) for n = 68840820191 and 68840820200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1012364970 + ... + 1012365037.

It is an arithmetic number, because the mean of its divisors is an integer number (13666927554).

Almost surely, 2^68840820238 is an apocalyptic number.

68840820238 is a deficient number, since it is larger than the sum of its proper divisors (40494600194).

68840820238 is a wasteful number, since it uses less digits than its factorization.

68840820238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024730026.

The product of its (nonzero) digits is 1179648, while the sum is 49.

The spelling of 68840820238 in words is "sixty-eight billion, eight hundred forty million, eight hundred twenty thousand, two hundred thirty-eight".