69663881345 has 16 divisors (see below), whose sum is σ = 86516050320. Its totient is φ = 53786476800.

The previous prime is 69663881323. The next prime is 69663881351. The reversal of 69663881345 is 54318836696.

It can be written as a sum of positive squares in 8 ways, for example, as 28164894976 + 41498986369 = 167824^2 + 203713^2 .

It is a de Polignac number, because none of the positive numbers 2^k-69663881345 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244355 + ... + 446135.

It is an arithmetic number, because the mean of its divisors is an integer number (5407253145).

Almost surely, 2^69663881345 is an apocalyptic number.

It is an amenable number.

69663881345 is a deficient number, since it is larger than the sum of its proper divisors (16852168975).

69663881345 is a wasteful number, since it uses less digits than its factorization.

69663881345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204196.

The product of its digits is 22394880, while the sum is 59.

The spelling of 69663881345 in words is "sixty-nine billion, six hundred sixty-three million, eight hundred eighty-one thousand, three hundred forty-five".