1115809143570 has 288 divisors, whose sum is σ = 3366538943040. Its totient is φ = 255507436800.

The previous prime is 1115809143563. The next prime is 1115809143623. The reversal of 1115809143570 is 753419085111.

1115809143570 is a `hidden beast` number, since 1 + 1 + 1 + 580 + 9 + 14 + 3 + 57 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 71790000 + ... + 71805540.

It is an arithmetic number, because the mean of its divisors is an integer number (11689371330).

Almost surely, 2^{1115809143570} is an apocalyptic number.

1115809143570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1115809143570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1683269471520).

1115809143570 is an abundant number, since it is smaller than the sum of its proper divisors (2250729799470).

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

1115809143570 is a wasteful number, since it uses less digits than its factorization.

1115809143570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15942 (or 15928 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 45.

The spelling of 1115809143570 in words is "one trillion, one hundred fifteen billion, eight hundred nine million, one hundred forty-three thousand, five hundred seventy".