69320656987 has 2 divisors, whose sum is σ = 69320656988. Its totient is φ = 69320656986.

The previous prime is 69320656981. The next prime is 69320657011. The reversal of 69320656987 is 78965602396.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69320656987 - 2²³ = 69312268379 is a prime.

It is not a weakly prime, because it can be changed into another prime (69320656981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34660328493 + 34660328494.

It is an arithmetic number, because the mean of its divisors is an integer number (34660328494).

Almost surely, 2^69320656987 is an apocalyptic number.

69320656987 is a deficient number, since it is larger than the sum of its proper divisors (1).

69320656987 is an equidigital number, since it uses as much as digits as its factorization.

69320656987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29393280, while the sum is 61.

The spelling of 69320656987 in words is "sixty-nine billion, three hundred twenty million, six hundred fifty-six thousand, nine hundred eighty-seven".