69840506965 has 8 divisors (see below), whose sum is σ = 84094646328. Its totient is φ = 55681713600.

The previous prime is 69840506891. The next prime is 69840506993. The reversal of 69840506965 is 56960504896.

It can be written as a sum of positive squares in 4 ways, for example, as 17519434321 + 52321072644 = 132361^2 + 228738^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 69840506965 - 2³¹ = 67693023317 is a prime.

It is a super-2 number, since 2×69840506965² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 23834886 + ... + 23837815.

It is an arithmetic number, because the mean of its divisors is an integer number (10511830791).

Almost surely, 2^69840506965 is an apocalyptic number.

It is an amenable number.

69840506965 is a deficient number, since it is larger than the sum of its proper divisors (14254139363).

69840506965 is a wasteful number, since it uses less digits than its factorization.

69840506965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47672999.

The product of its (nonzero) digits is 13996800, while the sum is 58.

The spelling of 69840506965 in words is "sixty-nine billion, eight hundred forty million, five hundred six thousand, nine hundred sixty-five".