5436128281 has 4 divisors (see below), whose sum is σ = 5517264592. Its totient is φ = 5354991972.

The previous prime is 5436128249. The next prime is 5436128293. The reversal of 5436128281 is 1828216345.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5436128281 - 2⁵ = 5436128249 is a prime.

It is a super-2 number, since 2×5436128281² = 59102981374976029922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5436128231) 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, 40568055 + ... + 40568188.

It is an arithmetic number, because the mean of its divisors is an integer number (1379316148).

Almost surely, 2^5436128281 is an apocalyptic number.

It is an amenable number.

5436128281 is a deficient number, since it is larger than the sum of its proper divisors (81136311).

5436128281 is an equidigital number, since it uses as much as digits as its factorization.

5436128281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81136310.

The product of its digits is 92160, while the sum is 40.

The square root of 5436128281 is about 73730.1043061788. The cubic root of 5436128281 is about 1758.3145323646.

The spelling of 5436128281 in words is "five billion, four hundred thirty-six million, one hundred twenty-eight thousand, two hundred eighty-one".