1115643145542 has 16 divisors (see below), whose sum is σ = 2232165126720. Its totient is φ = 371734575912.

The previous prime is 1115643145531. The next prime is 1115643145553. The reversal of 1115643145542 is 2455413465111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1115643145531) and next prime (1115643145553).

It is a junction number, because it is equal to n+sod(n) for n = 1115643145494 and 1115643145503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36601648 + ... + 36632115.

It is an arithmetic number, because the mean of its divisors is an integer number (139510320420).

Almost surely, 2^{1115643145542} is an apocalyptic number.

1115643145542 is an abundant number, since it is smaller than the sum of its proper divisors (1116521981178).

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

1115643145542 is a wasteful number, since it uses less digits than its factorization.

1115643145542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73236307.

The product of its digits is 288000, while the sum is 42.

The spelling of 1115643145542 in words is "one trillion, one hundred fifteen billion, six hundred forty-three million, one hundred forty-five thousand, five hundred forty-two".