616857227640 has 48 divisors (see below), whose sum is σ = 2004785991000. Its totient is φ = 164495260608.

The previous prime is 616857227639. The next prime is 616857227659. The reversal of 616857227640 is 46722758616.

It is a happy number.

616857227640 is a `hidden beast` number, since 6 + 1 + 6 + 8 + 572 + 2 + 7 + 64 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 856745790 + ... + 856746509.

Almost surely, 2^616857227640 is an apocalyptic number.

616857227640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

616857227640 is an abundant number, since it is smaller than the sum of its proper divisors (1387928763360).

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

616857227640 is a wasteful number, since it uses less digits than its factorization.

616857227640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713492316 (or 1713492309 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 616857227640 in words is "six hundred sixteen billion, eight hundred fifty-seven million, two hundred twenty-seven thousand, six hundred forty".