69638650901 has 2 divisors, whose sum is σ = 69638650902. Its totient is φ = 69638650900.

The previous prime is 69638650849. The next prime is 69638650909. The reversal of 69638650901 is 10905683696.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65433128401 + 4205522500 = 255799^2 + 64850^2 .

It is a cyclic number.

It is not a de Polignac number, because 69638650901 - 2¹⁴ = 69638634517 is a prime.

It is a super-2 number, since 2×69638650901² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69638650909) 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, 34819325450 + 34819325451.

It is an arithmetic number, because the mean of its divisors is an integer number (34819325451).

Almost surely, 2^69638650901 is an apocalyptic number.

It is an amenable number.

69638650901 is a deficient number, since it is larger than the sum of its proper divisors (1).

69638650901 is an equidigital number, since it uses as much as digits as its factorization.

69638650901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The spelling of 69638650901 in words is "sixty-nine billion, six hundred thirty-eight million, six hundred fifty thousand, nine hundred one".