4261966543 has 4 divisors (see below), whose sum is σ = 4361082088. Its totient is φ = 4162851000.

The previous prime is 4261966517. The next prime is 4261966549. The reversal of 4261966543 is 3456691624.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4261966543 is a prime.

It is a super-4 number, since 4×4261966543⁴ (a number of 40 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4261966493 and 4261966502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4261966549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49557708 + ... + 49557793.

It is an arithmetic number, because the mean of its divisors is an integer number (1090270522).

Almost surely, 2^4261966543 is an apocalyptic number.

4261966543 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

4261966543 is a deficient number, since it is larger than the sum of its proper divisors (99115545).

4261966543 is an equidigital number, since it uses as much as digits as its factorization.

4261966543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99115544.

The product of its digits is 933120, while the sum is 46.

The square root of 4261966543 is about 65283.7387333170. The cubic root of 4261966543 is about 1621.3247487138.

The spelling of 4261966543 in words is "four billion, two hundred sixty-one million, nine hundred sixty-six thousand, five hundred forty-three".