2111511433142 has 4 divisors (see below), whose sum is σ = 3167267149716. Its totient is φ = 1055755716570.

The previous prime is 2111511433123. The next prime is 2111511433153. The reversal of 2111511433142 is 2413341151112.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527877858284 + ... + 527877858287.

It is an arithmetic number, because the mean of its divisors is an integer number (791816787429).

Almost surely, 2^{2111511433142} is an apocalyptic number.

2111511433142 is a deficient number, since it is larger than the sum of its proper divisors (1055755716574).

2111511433142 is a wasteful number, since it uses less digits than its factorization.

2111511433142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055755716573.

The product of its digits is 2880, while the sum is 29.

Adding to 2111511433142 its reverse (2413341151112), we get a palindrome (4524852584254).

The spelling of 2111511433142 in words is "two trillion, one hundred eleven billion, five hundred eleven million, four hundred thirty-three thousand, one hundred forty-two".