1131562245542 has 16 divisors (see below), whose sum is σ = 1702704596400. Its totient is φ = 563996734080.

The previous prime is 1131562245461. The next prime is 1131562245581. The reversal of 1131562245542 is 2455422651311.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131562245542.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 171809 + ... + 1514147.

It is an arithmetic number, because the mean of its divisors is an integer number (106419037275).

Almost surely, 2^{1131562245542} is an apocalyptic number.

1131562245542 is a deficient number, since it is larger than the sum of its proper divisors (571142350858).

1131562245542 is a wasteful number, since it uses less digits than its factorization.

1131562245542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343671.

The product of its digits is 288000, while the sum is 41.

Adding to 1131562245542 its reverse (2455422651311), we get a palindrome (3586984896853).

The spelling of 1131562245542 in words is "one trillion, one hundred thirty-one billion, five hundred sixty-two million, two hundred forty-five thousand, five hundred forty-two".