69691605125 has 8 divisors (see below), whose sum is σ = 86975123352. Its totient is φ = 55753284000.

The previous prime is 69691605103. The next prime is 69691605149. The reversal of 69691605125 is 52150619696.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6265197409 + 63426407716 = 79153^2 + 251846^2 .

It is not a de Polignac number, because 69691605125 - 2³² = 65396637829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278766296 + ... + 278766545.

It is an arithmetic number, because the mean of its divisors is an integer number (10871890419).

Almost surely, 2^69691605125 is an apocalyptic number.

It is an amenable number.

69691605125 is a deficient number, since it is larger than the sum of its proper divisors (17283518227).

69691605125 is an equidigital number, since it uses as much as digits as its factorization.

69691605125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557532856 (or 557532846 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 50.

The spelling of 69691605125 in words is "sixty-nine billion, six hundred ninety-one million, six hundred five thousand, one hundred twenty-five".