616005742433 has 4 divisors (see below), whose sum is σ = 617341980948. Its totient is φ = 614669503920.

The previous prime is 616005742381. The next prime is 616005742507. The reversal of 616005742433 is 334247500616.

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

It can be written as a sum of positive squares in 2 ways, for example, as 398908454464 + 217097287969 = 631592^2 + 465937^2 .

It is a cyclic number.

It is not a de Polignac number, because 616005742433 - 2⁶ = 616005742369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (616005742333) 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 3 ways as a sum of consecutive naturals, for example, 668118566 + ... + 668119487.

It is an arithmetic number, because the mean of its divisors is an integer number (154335495237).

Almost surely, 2^616005742433 is an apocalyptic number.

It is an amenable number.

616005742433 is a deficient number, since it is larger than the sum of its proper divisors (1336238515).

616005742433 is a wasteful number, since it uses less digits than its factorization.

616005742433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336238514.

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 616005742433 in words is "six hundred sixteen billion, five million, seven hundred forty-two thousand, four hundred thirty-three".