10543387761 has 21 divisors (see below), whose sum is σ = 15812008009. Its totient is φ = 7027076916.

The previous prime is 10543387747. The next prime is 10543387769. The reversal of 10543387761 is 16778334501.

The square root of 10543387761 is 102681.

It is a perfect power (a square), and thus also a powerful number.

10543387761 is a `hidden beast` number, since 1 + 0 + 543 + 38 + 7 + 76 + 1 = 666.

It is not a de Polignac number, because 10543387761 - 2²⁷ = 10409170033 is a prime.

It is a super-2 number, since 2×10543387761² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10543387769) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 2770486 + ... + 2774288.

Almost surely, 2^10543387761 is an apocalyptic number.

10543387761 is the 102681-st square number.

10543387761 is the 51341-st centered octagonal number.

It is an amenable number.

10543387761 is a deficient number, since it is larger than the sum of its proper divisors (5268620248).

10543387761 is an frugal number, since it uses more digits than its factorization.

10543387761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7624 (or 3806 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 10543387761 in words is "ten billion, five hundred forty-three million, three hundred eighty-seven thousand, seven hundred sixty-one".