11155543534 has 4 divisors (see below), whose sum is σ = 16733315304. Its totient is φ = 5577771766.

The previous prime is 11155543493. The next prime is 11155543561. The reversal of 11155543534 is 43534555111.

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

It is a junction number, because it is equal to n+sod(n) for n = 11155543493 and 11155543502.

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, 2788885882 + ... + 2788885885.

It is an arithmetic number, because the mean of its divisors is an integer number (4183328826).

Almost surely, 2^11155543534 is an apocalyptic number.

11155543534 is a deficient number, since it is larger than the sum of its proper divisors (5577771770).

11155543534 is an equidigital number, since it uses as much as digits as its factorization.

11155543534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5577771769.

The product of its digits is 90000, while the sum is 37.

The spelling of 11155543534 in words is "eleven billion, one hundred fifty-five million, five hundred forty-three thousand, five hundred thirty-four".