616233350561 has 12 divisors (see below), whose sum is σ = 639355521924. Its totient is φ = 593592854400.

The previous prime is 616233350539. The next prime is 616233350567. The reversal of 616233350561 is 165053332616.

It can be written as a sum of positive squares in 2 ways, for example, as 128636995600 + 487596354961 = 358660^2 + 698281^2 .

It is not a de Polignac number, because 616233350561 - 2³⁰ = 615159608737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616233350567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 948260 + ... + 1460021.

It is an arithmetic number, because the mean of its divisors is an integer number (53279626827).

Almost surely, 2^616233350561 is an apocalyptic number.

It is an amenable number.

616233350561 is a deficient number, since it is larger than the sum of its proper divisors (23122171363).

616233350561 is an equidigital number, since it uses as much as digits as its factorization.

616233350561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408480 (or 2408401 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 41.

The spelling of 616233350561 in words is "six hundred sixteen billion, two hundred thirty-three million, three hundred fifty thousand, five hundred sixty-one".