68877220283081 has 16 divisors (see below), whose sum is σ = 79668537583488. Its totient is φ = 58323890851200.

The previous prime is 68877220283077. The next prime is 68877220283101. The reversal of 68877220283081 is 18038202277886.

It is a cyclic number.

It is not a de Polignac number, because 68877220283081 - 2² = 68877220283077 is a prime.

It is a super-2 number, since 2×68877220283081² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (68877220283881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11556911 + ... + 16471691.

It is an arithmetic number, because the mean of its divisors is an integer number (4979283598968).

Almost surely, 2^{68877220283081} is an apocalyptic number.

It is an amenable number.

68877220283081 is a deficient number, since it is larger than the sum of its proper divisors (10791317300407).

68877220283081 is a wasteful number, since it uses less digits than its factorization.

68877220283081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4938992.

The product of its (nonzero) digits is 28901376, while the sum is 62.

The spelling of 68877220283081 in words is "sixty-eight trillion, eight hundred seventy-seven billion, two hundred twenty million, two hundred eighty-three thousand, eighty-one".