616431631405 has 8 divisors (see below), whose sum is σ = 756920701152. Its totient is φ = 481676809488.

The previous prime is 616431631393. The next prime is 616431631429. The reversal of 616431631405 is 504136134616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 616431631405 - 2⁵ = 616431631373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1433561719 + ... + 1433562148.

It is an arithmetic number, because the mean of its divisors is an integer number (94615087644).

Almost surely, 2^616431631405 is an apocalyptic number.

It is an amenable number.

616431631405 is a deficient number, since it is larger than the sum of its proper divisors (140489069747).

616431631405 is a wasteful number, since it uses less digits than its factorization.

616431631405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2867123915.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 616431631405 in words is "six hundred sixteen billion, four hundred thirty-one million, six hundred thirty-one thousand, four hundred five".