68851761101 has 2 divisors, whose sum is σ = 68851761102. Its totient is φ = 68851761100.

The previous prime is 68851761079. The next prime is 68851761107. The reversal of 68851761101 is 10116715886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66680667076 + 2171094025 = 258226^2 + 46595^2 .

It is a cyclic number.

It is not a de Polignac number, because 68851761101 - 2¹⁰ = 68851760077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68851761107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34425880550 + 34425880551.

It is an arithmetic number, because the mean of its divisors is an integer number (34425880551).

Almost surely, 2^68851761101 is an apocalyptic number.

It is an amenable number.

68851761101 is a deficient number, since it is larger than the sum of its proper divisors (1).

68851761101 is an equidigital number, since it uses as much as digits as its factorization.

68851761101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 44.

The spelling of 68851761101 in words is "sixty-eight billion, eight hundred fifty-one million, seven hundred sixty-one thousand, one hundred one".