10543656436 has 6 divisors (see below), whose sum is σ = 18451398770. Its totient is φ = 5271828216.

The previous prime is 10543656427. The next prime is 10543656439. The reversal of 10543656436 is 63465634501.

It can be written as a sum of positive squares in only one way, i.e., 9042868836 + 1500787600 = 95094^2 + 38740^2 .

It is a super-2 number, since 2×10543656436² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10543656392 and 10543656401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10543656439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1317957051 + ... + 1317957058.

Almost surely, 2^10543656436 is an apocalyptic number.

It is an amenable number.

10543656436 is a deficient number, since it is larger than the sum of its proper divisors (7907742334).

10543656436 is a wasteful number, since it uses less digits than its factorization.

10543656436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635914113 (or 2635914111 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 10543656436 in words is "ten billion, five hundred forty-three million, six hundred fifty-six thousand, four hundred thirty-six".