612724520969 has 4 divisors (see below), whose sum is σ = 668426750160. Its totient is φ = 557022291780.

The previous prime is 612724520959. The next prime is 612724520987. The reversal of 612724520969 is 969025427216.

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 a de Polignac number, because none of the positive numbers 2^k-612724520969 is a prime.

It is a super-2 number, since 2×612724520969² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 612724520969.

It is not an unprimeable number, because it can be changed into a prime (612724520959) 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, 27851114579 + ... + 27851114600.

It is an arithmetic number, because the mean of its divisors is an integer number (167106687540).

Almost surely, 2^612724520969 is an apocalyptic number.

It is an amenable number.

612724520969 is a deficient number, since it is larger than the sum of its proper divisors (55702229191).

612724520969 is a wasteful number, since it uses less digits than its factorization.

612724520969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55702229190.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 612724520969 in words is "six hundred twelve billion, seven hundred twenty-four million, five hundred twenty thousand, nine hundred sixty-nine".