1163659281644 has 6 divisors (see below), whose sum is σ = 2036403742884. Its totient is φ = 581829640820.

The previous prime is 1163659281641. The next prime is 1163659281667. The reversal of 1163659281644 is 4461829563611.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1163659281644.

It is not an unprimeable number, because it can be changed into a prime (1163659281641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145457410202 + ... + 145457410209.

It is an arithmetic number, because the mean of its divisors is an integer number (339400623814).

Almost surely, 2^{1163659281644} is an apocalyptic number.

It is an amenable number.

1163659281644 is a deficient number, since it is larger than the sum of its proper divisors (872744461240).

1163659281644 is a wasteful number, since it uses less digits than its factorization.

1163659281644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290914820415 (or 290914820413 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 56.

The spelling of 1163659281644 in words is "one trillion, one hundred sixty-three billion, six hundred fifty-nine million, two hundred eighty-one thousand, six hundred forty-four".