1115571973824 has 1680 divisors, whose sum is σ = 4431785757696. Its totient is φ = 275121100800.

The previous prime is 1115571973811. The next prime is 1115571973849. The reversal of 1115571973824 is 4283791755111.

It is a happy number.

1115571973824 is a `hidden beast` number, since 1 + 1 + 1 + 557 + 1 + 9 + 7 + 3 + 82 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 239 ways as a sum of consecutive naturals, for example, 21048527782 + ... + 21048527834.

Almost surely, 2^{1115571973824} is an apocalyptic number.

1115571973824 is a gapful number since it is divisible by the number (14) 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 1115571973824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2215892878848).

1115571973824 is an abundant number, since it is smaller than the sum of its proper divisors (3316213783872).

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

1115571973824 is an frugal number, since it uses more digits than its factorization.

1115571973824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 107 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 54.

The spelling of 1115571973824 in words is "one trillion, one hundred fifteen billion, five hundred seventy-one million, nine hundred seventy-three thousand, eight hundred twenty-four".