69638650843 has 2 divisors, whose sum is σ = 69638650844. Its totient is φ = 69638650842.

The previous prime is 69638650747. The next prime is 69638650849. The reversal of 69638650843 is 34805683696.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69638650843 is a prime.

It is a super-2 number, since 2×69638650843² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (69638650849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34819325421 + 34819325422.

It is an arithmetic number, because the mean of its divisors is an integer number (34819325422).

Almost surely, 2^69638650843 is an apocalyptic number.

69638650843 is a deficient number, since it is larger than the sum of its proper divisors (1).

69638650843 is an equidigital number, since it uses as much as digits as its factorization.

69638650843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22394880, while the sum is 58.

The spelling of 69638650843 in words is "sixty-nine billion, six hundred thirty-eight million, six hundred fifty thousand, eight hundred forty-three".