616538254128 has 40 divisors (see below), whose sum is σ = 1595780939376. Its totient is φ = 205118284800.

The previous prime is 616538254121. The next prime is 616538254207. The reversal of 616538254128 is 821452835616.

It is not an unprimeable number, because it can be changed into a prime (616538254121) 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, 12301813 + ... + 12351828.

Almost surely, 2^616538254128 is an apocalyptic number.

It is an amenable number.

616538254128 is an abundant number, since it is smaller than the sum of its proper divisors (979242685248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

616538254128 is a wasteful number, since it uses less digits than its factorization.

616538254128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24654173 (or 24654167 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 51.

The spelling of 616538254128 in words is "six hundred sixteen billion, five hundred thirty-eight million, two hundred fifty-four thousand, one hundred twenty-eight".