616308906457 has 4 divisors (see below), whose sum is σ = 616310640400. Its totient is φ = 616307172516.

The previous prime is 616308906431. The next prime is 616308906463. The reversal of 616308906457 is 754609803616.

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 616308906457 - 2¹⁵ = 616308873689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 616308906398 and 616308906407.

It is not an unprimeable number, because it can be changed into a prime (616308946457) 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, 118323 + ... + 1116520.

It is an arithmetic number, because the mean of its divisors is an integer number (154077660100).

Almost surely, 2^616308906457 is an apocalyptic number.

It is an amenable number.

616308906457 is a deficient number, since it is larger than the sum of its proper divisors (1733943).

616308906457 is a wasteful number, since it uses less digits than its factorization.

616308906457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733942.

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 616308906457 in words is "six hundred sixteen billion, three hundred eight million, nine hundred six thousand, four hundred fifty-seven".