616255515455 has 8 divisors (see below), whose sum is σ = 739510925712. Its totient is φ = 493001540928.

The previous prime is 616255515451. The next prime is 616255515503. The reversal of 616255515455 is 554515552616.

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 616255515455 - 2² = 616255515451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616255515451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1204352 + ... + 1637978.

It is an arithmetic number, because the mean of its divisors is an integer number (92438865714).

Almost surely, 2^616255515455 is an apocalyptic number.

616255515455 is a deficient number, since it is larger than the sum of its proper divisors (123255410257).

616255515455 is a wasteful number, since it uses less digits than its factorization.

616255515455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717865.

The product of its digits is 4500000, while the sum is 50.

The spelling of 616255515455 in words is "six hundred sixteen billion, two hundred fifty-five million, five hundred fifteen thousand, four hundred fifty-five".