69050821681 has 16 divisors (see below), whose sum is σ = 70588627200. Its totient is φ = 67531546368.

The previous prime is 69050821661. The next prime is 69050821717. The reversal of 69050821681 is 18612805096.

It is a cyclic number.

It is not a de Polignac number, because 69050821681 - 2¹⁵ = 69050788913 is a prime.

It is a super-2 number, since 2×69050821681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69050821661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8585460 + ... + 8593498.

It is an arithmetic number, because the mean of its divisors is an integer number (4411789200).

Almost surely, 2^69050821681 is an apocalyptic number.

It is an amenable number.

69050821681 is a deficient number, since it is larger than the sum of its proper divisors (1537805519).

69050821681 is a wasteful number, since it uses less digits than its factorization.

69050821681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9168.

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 69050821681 in words is "sixty-nine billion, fifty million, eight hundred twenty-one thousand, six hundred eighty-one".