616727838897 has 20 divisors (see below), whose sum is σ = 921455524836. Its totient is φ = 411075699840.

The previous prime is 616727838871. The next prime is 616727838913. The reversal of 616727838897 is 798838727616.

It can be written as a sum of positive squares in 2 ways, for example, as 124315477056 + 492412361841 = 352584^2 + 701721^2 .

It is not a de Polignac number, because 616727838897 - 2¹⁸ = 616727576753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (616727838827) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 264004 + ... + 1141557.

Almost surely, 2^616727838897 is an apocalyptic number.

It is an amenable number.

616727838897 is a deficient number, since it is larger than the sum of its proper divisors (304727685939).

616727838897 is a wasteful number, since it uses less digits than its factorization.

616727838897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410990 (or 1410981 counting only the distinct ones).

The product of its digits is 341397504, while the sum is 72.

The spelling of 616727838897 in words is "six hundred sixteen billion, seven hundred twenty-seven million, eight hundred thirty-eight thousand, eight hundred ninety-seven".