69209125513 has 4 divisors (see below), whose sum is σ = 75500864208. Its totient is φ = 62917386820.

The previous prime is 69209125511. The next prime is 69209125519. The reversal of 69209125513 is 31552190296.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 69209125513 - 2¹ = 69209125511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 69209125513.

It is not an unprimeable number, because it can be changed into a prime (69209125511) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 3145869331 + ... + 3145869352.

It is an arithmetic number, because the mean of its divisors is an integer number (18875216052).

Almost surely, 2^69209125513 is an apocalyptic number.

It is an amenable number.

69209125513 is a deficient number, since it is larger than the sum of its proper divisors (6291738695).

69209125513 is a wasteful number, since it uses less digits than its factorization.

69209125513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6291738694.

The product of its (nonzero) digits is 145800, while the sum is 43.

The spelling of 69209125513 in words is "sixty-nine billion, two hundred nine million, one hundred twenty-five thousand, five hundred thirteen".