67722304381 has 2 divisors, whose sum is σ = 67722304382. Its totient is φ = 67722304380.

The previous prime is 67722304289. The next prime is 67722304453. The reversal of 67722304381 is 18340322776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40461322500 + 27260981881 = 201150^2 + 165109^2 .

It is a cyclic number.

It is not a de Polignac number, because 67722304381 - 2¹⁵ = 67722271613 is a prime.

It is a super-2 number, since 2×67722304381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67722004381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33861152190 + 33861152191.

It is an arithmetic number, because the mean of its divisors is an integer number (33861152191).

Almost surely, 2^67722304381 is an apocalyptic number.

It is an amenable number.

67722304381 is a deficient number, since it is larger than the sum of its proper divisors (1).

67722304381 is an equidigital number, since it uses as much as digits as its factorization.

67722304381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 43.

The spelling of 67722304381 in words is "sixty-seven billion, seven hundred twenty-two million, three hundred four thousand, three hundred eighty-one".