69940843749 has 48 divisors (see below), whose sum is σ = 117465073024. Its totient is φ = 39272688000.

The previous prime is 69940843747. The next prime is 69940843759. The reversal of 69940843749 is 94734804996.

It is not a de Polignac number, because 69940843749 - 2¹ = 69940843747 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69940843747) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4192074 + ... + 4208724.

Almost surely, 2^69940843749 is an apocalyptic number.

It is an amenable number.

69940843749 is a deficient number, since it is larger than the sum of its proper divisors (47524229275).

69940843749 is a wasteful number, since it uses less digits than its factorization.

69940843749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17818 (or 17815 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 69940843749 in words is "sixty-nine billion, nine hundred forty million, eight hundred forty-three thousand, seven hundred forty-nine".