68677014421 has 2 divisors, whose sum is σ = 68677014422. Its totient is φ = 68677014420.

The previous prime is 68677014401. The next prime is 68677014449. The reversal of 68677014421 is 12441077686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42648032196 + 26028982225 = 206514^2 + 161335^2 .

It is a cyclic number.

It is not a de Polignac number, because 68677014421 - 2⁵ = 68677014389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68677014401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34338507210 + 34338507211.

It is an arithmetic number, because the mean of its divisors is an integer number (34338507211).

Almost surely, 2^68677014421 is an apocalyptic number.

It is an amenable number.

68677014421 is a deficient number, since it is larger than the sum of its proper divisors (1).

68677014421 is an equidigital number, since it uses as much as digits as its factorization.

68677014421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 46.

The spelling of 68677014421 in words is "sixty-eight billion, six hundred seventy-seven million, fourteen thousand, four hundred twenty-one".