1011543234320 has 40 divisors (see below), whose sum is σ = 2356628005440. Its totient is φ = 403793210240.

The previous prime is 1011543234319. The next prime is 1011543234371. The reversal of 1011543234320 is 234323451101.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 12836780 + ... + 12915339.

It is an arithmetic number, because the mean of its divisors is an integer number (58915700136).

Almost surely, 2^{1011543234320} is an apocalyptic number.

1011543234320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011543234320 is an abundant number, since it is smaller than the sum of its proper divisors (1345084771120).

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

1011543234320 is a wasteful number, since it uses less digits than its factorization.

1011543234320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25752623 (or 25752617 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 1011543234320 its reverse (234323451101), we get a palindrome (1245866685421).

The spelling of 1011543234320 in words is "one trillion, eleven billion, five hundred forty-three million, two hundred thirty-four thousand, three hundred twenty".