611909523713 has 4 divisors (see below), whose sum is σ = 611914898880. Its totient is φ = 611904148548.

The previous prime is 611909523691. The next prime is 611909523817. The reversal of 611909523713 is 317325909116.

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 611909523713 - 2⁸ = 611909523457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611909523013) 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, 2513045 + ... + 2745762.

It is an arithmetic number, because the mean of its divisors is an integer number (152978724720).

Almost surely, 2^611909523713 is an apocalyptic number.

It is an amenable number.

611909523713 is a deficient number, since it is larger than the sum of its proper divisors (5375167).

611909523713 is a wasteful number, since it uses less digits than its factorization.

611909523713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5375166.

The product of its (nonzero) digits is 306180, while the sum is 47.

The spelling of 611909523713 in words is "six hundred eleven billion, nine hundred nine million, five hundred twenty-three thousand, seven hundred thirteen".