616606366523 has 4 divisors (see below), whose sum is σ = 704692990320. Its totient is φ = 528519742728.

The previous prime is 616606366487. The next prime is 616606366553. The reversal of 616606366523 is 325663606616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 616606366523 - 2³⁶ = 547886889787 is a prime.

It is a super-2 number, since 2×616606366523² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616606366553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44043311888 + ... + 44043311901.

It is an arithmetic number, because the mean of its divisors is an integer number (176173247580).

Almost surely, 2^616606366523 is an apocalyptic number.

616606366523 is a deficient number, since it is larger than the sum of its proper divisors (88086623797).

616606366523 is an equidigital number, since it uses as much as digits as its factorization.

616606366523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88086623796.

The product of its (nonzero) digits is 4199040, while the sum is 50.

The spelling of 616606366523 in words is "six hundred sixteen billion, six hundred six million, three hundred sixty-six thousand, five hundred twenty-three".