616893136628 has 12 divisors (see below), whose sum is σ = 1080499305060. Its totient is φ = 308179049472.

The previous prime is 616893136577. The next prime is 616893136667. The reversal of 616893136628 is 826631398616.

It can be written as a sum of positive squares in 2 ways, for example, as 469592231824 + 147300904804 = 685268^2 + 383798^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66874523 + ... + 66883746.

It is an arithmetic number, because the mean of its divisors is an integer number (90041608755).

Almost surely, 2^616893136628 is an apocalyptic number.

It is an amenable number.

616893136628 is a deficient number, since it is larger than the sum of its proper divisors (463606168432).

616893136628 is a wasteful number, since it uses less digits than its factorization.

616893136628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133759426 (or 133759424 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 59.

The spelling of 616893136628 in words is "six hundred sixteen billion, eight hundred ninety-three million, one hundred thirty-six thousand, six hundred twenty-eight".