69616863989 has 2 divisors, whose sum is σ = 69616863990. Its totient is φ = 69616863988.

The previous prime is 69616863961. The next prime is 69616863997. The reversal of 69616863989 is 98936861696.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36803352964 + 32813511025 = 191842^2 + 181145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69616863989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69616863889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34808431994 + 34808431995.

It is an arithmetic number, because the mean of its divisors is an integer number (34808431995).

Almost surely, 2^69616863989 is an apocalyptic number.

It is an amenable number.

69616863989 is a deficient number, since it is larger than the sum of its proper divisors (1).

69616863989 is an equidigital number, since it uses as much as digits as its factorization.

69616863989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181398528, while the sum is 71.

The spelling of 69616863989 in words is "sixty-nine billion, six hundred sixteen million, eight hundred sixty-three thousand, nine hundred eighty-nine".