1177851361648 has 20 divisors (see below), whose sum is σ = 2457632168488. Its totient is φ = 543623705280.

The previous prime is 1177851361543. The next prime is 1177851361649. The reversal of 1177851361648 is 8461631587711.

It is a junction number, because it is equal to n+sod(n) for n = 1177851361592 and 1177851361601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1177851361649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2831373258 + ... + 2831373673.

Almost surely, 2^{1177851361648} is an apocalyptic number.

It is an amenable number.

1177851361648 is an abundant number, since it is smaller than the sum of its proper divisors (1279780806840).

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

1177851361648 is a wasteful number, since it uses less digits than its factorization.

1177851361648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5662746952 (or 5662746946 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 58.

The spelling of 1177851361648 in words is "one trillion, one hundred seventy-seven billion, eight hundred fifty-one million, three hundred sixty-one thousand, six hundred forty-eight".