69873875789 has 2 divisors, whose sum is σ = 69873875790. Its totient is φ = 69873875788.

The previous prime is 69873875759. The next prime is 69873875791. The reversal of 69873875789 is 98757837896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68779258564 + 1094617225 = 262258^2 + 33085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69873875789 is a prime.

Together with 69873875791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69873875759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34936937894 + 34936937895.

It is an arithmetic number, because the mean of its divisors is an integer number (34936937895).

Almost surely, 2^69873875789 is an apocalyptic number.

It is an amenable number.

69873875789 is a deficient number, since it is larger than the sum of its proper divisors (1).

69873875789 is an equidigital number, since it uses as much as digits as its factorization.

69873875789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1280240640, while the sum is 77.

The spelling of 69873875789 in words is "sixty-nine billion, eight hundred seventy-three million, eight hundred seventy-five thousand, seven hundred eighty-nine".