1115487728640 has 528 divisors, whose sum is σ = 4017145466880. Its totient is φ = 296806809600.

The previous prime is 1115487728623. The next prime is 1115487728699. The reversal of 1115487728640 is 468277845111.

It is a happy number.

1115487728640 is a `hidden beast` number, since 1 + 1 + 1 + 548 + 77 + 28 + 6 + 4 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 872155521 + ... + 872156799.

Almost surely, 2^{1115487728640} is an apocalyptic number.

1115487728640 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 1115487728640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2008572733440).

1115487728640 is an abundant number, since it is smaller than the sum of its proper divisors (2901657738240).

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

1115487728640 is an equidigital number, since it uses as much as digits as its factorization.

1115487728640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020 (or 1990 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 54.

The spelling of 1115487728640 in words is "one trillion, one hundred fifteen billion, four hundred eighty-seven million, seven hundred twenty-eight thousand, six hundred forty".