1147977774680 has 128 divisors (see below), whose sum is σ = 2943309934080. Its totient is φ = 398884485120.

The previous prime is 1147977774661. The next prime is 1147977774733. The reversal of 1147977774680 is 864777797411.

It is a self number, because there is not a number n which added to its sum of digits gives 1147977774680.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9829187 + ... + 9945293.

It is an arithmetic number, because the mean of its divisors is an integer number (22994608860).

Almost surely, 2^{1147977774680} is an apocalyptic number.

1147977774680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1147977774680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1471654967040).

1147977774680 is an abundant number, since it is smaller than the sum of its proper divisors (1795332159400).

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

1147977774680 is a wasteful number, since it uses less digits than its factorization.

1147977774680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117129 (or 117125 counting only the distinct ones).

The product of its (nonzero) digits is 116169984, while the sum is 68.

The spelling of 1147977774680 in words is "one trillion, one hundred forty-seven billion, nine hundred seventy-seven million, seven hundred seventy-four thousand, six hundred eighty".