69408786427 has 2 divisors, whose sum is σ = 69408786428. Its totient is φ = 69408786426.

The previous prime is 69408786409. The next prime is 69408786463. The reversal of 69408786427 is 72468780496.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69408786427 - 2⁷ = 69408786299 is a prime.

It is not a weakly prime, because it can be changed into another prime (69408786487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34704393213 + 34704393214.

It is an arithmetic number, because the mean of its divisors is an integer number (34704393214).

Almost surely, 2^69408786427 is an apocalyptic number.

69408786427 is a deficient number, since it is larger than the sum of its proper divisors (1).

69408786427 is an equidigital number, since it uses as much as digits as its factorization.

69408786427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32514048, while the sum is 61.

The spelling of 69408786427 in words is "sixty-nine billion, four hundred eight million, seven hundred eighty-six thousand, four hundred twenty-seven".