67438873679 has 2 divisors, whose sum is σ = 67438873680. Its totient is φ = 67438873678.

The previous prime is 67438873637. The next prime is 67438873693. The reversal of 67438873679 is 97637883476.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67438873679 - 2⁸ = 67438873423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67438873379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33719436839 + 33719436840.

It is an arithmetic number, because the mean of its divisors is an integer number (33719436840).

Almost surely, 2^67438873679 is an apocalyptic number.

67438873679 is a deficient number, since it is larger than the sum of its proper divisors (1).

67438873679 is an equidigital number, since it uses as much as digits as its factorization.

67438873679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 256048128, while the sum is 68.

The spelling of 67438873679 in words is "sixty-seven billion, four hundred thirty-eight million, eight hundred seventy-three thousand, six hundred seventy-nine".