69729783245 has 6 divisors (see below), whose sum is σ = 83676448458. Its totient is φ = 55783354224.

The previous prime is 69729783187. The next prime is 69729783287. The reversal of 69729783245 is 54238792796.

It can be written as a sum of positive squares in 3 ways, for example, as 7579791844 + 62149991401 = 87062^2 + 249299^2 .

It is not a de Polignac number, because 69729783245 - 2⁶ = 69729783181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 531419 + ... + 649511.

It is an arithmetic number, because the mean of its divisors is an integer number (13946074743).

Almost surely, 2^69729783245 is an apocalyptic number.

It is an amenable number.

69729783245 is a deficient number, since it is larger than the sum of its proper divisors (13946665213).

69729783245 is an frugal number, since it uses more digits than its factorization.

69729783245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236191 (or 118098 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 62.

The spelling of 69729783245 in words is "sixty-nine billion, seven hundred twenty-nine million, seven hundred eighty-three thousand, two hundred forty-five".