1157144821366 has 4 divisors (see below), whose sum is σ = 1735717232052. Its totient is φ = 578572410682.

The previous prime is 1157144821363. The next prime is 1157144821421. The reversal of 1157144821366 is 6631284417511.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1157144821366² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157144821363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289286205340 + ... + 289286205343.

It is an arithmetic number, because the mean of its divisors is an integer number (433929308013).

Almost surely, 2^{1157144821366} is an apocalyptic number.

1157144821366 is a deficient number, since it is larger than the sum of its proper divisors (578572410686).

1157144821366 is an equidigital number, since it uses as much as digits as its factorization.

1157144821366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578572410685.

The product of its digits is 967680, while the sum is 49.

The spelling of 1157144821366 in words is "one trillion, one hundred fifty-seven billion, one hundred forty-four million, eight hundred twenty-one thousand, three hundred sixty-six".