2011544043123 has 32 divisors (see below), whose sum is σ = 2779890223104. Its totient is φ = 1293115629312.

The previous prime is 2011544043053. The next prime is 2011544043133. The reversal of 2011544043123 is 3213404451102.

It is not a de Polignac number, because 2011544043123 - 2⁹ = 2011544042611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2011544043133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2978590 + ... + 3590972.

It is an arithmetic number, because the mean of its divisors is an integer number (86871569472).

Almost surely, 2^{2011544043123} is an apocalyptic number.

2011544043123 is a deficient number, since it is larger than the sum of its proper divisors (768346179981).

2011544043123 is a wasteful number, since it uses less digits than its factorization.

2011544043123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612795.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 2011544043123 its reverse (3213404451102), we get a palindrome (5224948494225).

The spelling of 2011544043123 in words is "two trillion, eleven billion, five hundred forty-four million, forty-three thousand, one hundred twenty-three".