5261543643 has 8 divisors (see below), whose sum is σ = 7031595088. Its totient is φ = 3499593984.

The previous prime is 5261543621. The next prime is 5261543657. The reversal of 5261543643 is 3463451625.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5261543643 - 2¹⁴ = 5261527259 is a prime.

It is a super-2 number, since 2×5261543643² = 55367683014387422898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5261543663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2023930 + ... + 2026527.

It is an arithmetic number, because the mean of its divisors is an integer number (878949386).

Almost surely, 2^5261543643 is an apocalyptic number.

5261543643 is a deficient number, since it is larger than the sum of its proper divisors (1770051445).

5261543643 is a wasteful number, since it uses less digits than its factorization.

5261543643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4050893.

The product of its digits is 259200, while the sum is 39.

The square root of 5261543643 is about 72536.4986954843. The cubic root of 5261543643 is about 1739.2862315535.

The spelling of 5261543643 in words is "five billion, two hundred sixty-one million, five hundred forty-three thousand, six hundred forty-three".