10543805018 has 4 divisors (see below), whose sum is σ = 15815707530. Its totient is φ = 5271902508.

The previous prime is 10543805003. The next prime is 10543805023. The reversal of 10543805018 is 81050834501.

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

It can be written as a sum of positive squares in only one way, i.e., 9350309809 + 1193495209 = 96697^2 + 34547^2 .

It is a super-2 number, since 2×10543805018² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2635951253 + ... + 2635951256.

Almost surely, 2^10543805018 is an apocalyptic number.

10543805018 is a deficient number, since it is larger than the sum of its proper divisors (5271902512).

10543805018 is an equidigital number, since it uses as much as digits as its factorization.

10543805018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5271902511.

The product of its (nonzero) digits is 19200, while the sum is 35.

The spelling of 10543805018 in words is "ten billion, five hundred forty-three million, eight hundred five thousand, eighteen".