67990417704439 has 2 divisors, whose sum is σ = 67990417704440. Its totient is φ = 67990417704438.

The previous prime is 67990417704431. The next prime is 67990417704479. The reversal of 67990417704439 is 93440771409976.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67990417704439 - 2³ = 67990417704431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67990417704431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33995208852219 + 33995208852220.

It is an arithmetic number, because the mean of its divisors is an integer number (33995208852220).

Almost surely, 2^{67990417704439} is an apocalyptic number.

67990417704439 is a deficient number, since it is larger than the sum of its proper divisors (1).

67990417704439 is an equidigital number, since it uses as much as digits as its factorization.

67990417704439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288054144, while the sum is 70.

The spelling of 67990417704439 in words is "sixty-seven trillion, nine hundred ninety billion, four hundred seventeen million, seven hundred four thousand, four hundred thirty-nine".