69729071992 has 8 divisors (see below), whose sum is σ = 130742010000. Its totient is φ = 34864535992.

The previous prime is 69729071941. The next prime is 69729072031. The reversal of 69729071992 is 29917092796.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 69729071992.

It is a congruent number.

It is an unprimeable number.

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, 4358066992 + ... + 4358067007.

It is an arithmetic number, because the mean of its divisors is an integer number (16342751250).

Almost surely, 2^69729071992 is an apocalyptic number.

It is an amenable number.

69729071992 is a deficient number, since it is larger than the sum of its proper divisors (61012938008).

69729071992 is a wasteful number, since it uses less digits than its factorization.

69729071992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8716134005 (or 8716134001 counting only the distinct ones).

The product of its (nonzero) digits is 7715736, while the sum is 61.

The spelling of 69729071992 in words is "sixty-nine billion, seven hundred twenty-nine million, seventy-one thousand, nine hundred ninety-two".