637688877068 has 12 divisors (see below), whose sum is σ = 1134870035880. Its totient is φ = 313440295392.

The previous prime is 637688877053. The next prime is 637688877079. The reversal of 637688877068 is 860778886736.

It is a junction number, because it is equal to n+sod(n) for n = 637688876986 and 637688877004.

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, 1351035521 + ... + 1351035992.

It is an arithmetic number, because the mean of its divisors is an integer number (94572502990).

Almost surely, 2^637688877068 is an apocalyptic number.

It is an amenable number.

637688877068 is a deficient number, since it is larger than the sum of its proper divisors (497181158812).

637688877068 is a wasteful number, since it uses less digits than its factorization.

637688877068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702071576 (or 2702071574 counting only the distinct ones).

The product of its (nonzero) digits is 910393344, while the sum is 74.

The spelling of 637688877068 in words is "six hundred thirty-seven billion, six hundred eighty-eight million, eight hundred seventy-seven thousand, sixty-eight".