4026526561 has 4 divisors (see below), whose sum is σ = 4026664624. Its totient is φ = 4026388500.

The previous prime is 4026526549. The next prime is 4026526583. The reversal of 4026526561 is 1656256204.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4026526561 - 2⁵ = 4026526529 is a prime.

It is a super-2 number, since 2×4026526561² = 32425832292876973442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4026526561.

It is not an unprimeable number, because it can be changed into a prime (4026526501) 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, 6255 + ... + 89956.

It is an arithmetic number, because the mean of its divisors is an integer number (1006666156).

Almost surely, 2^4026526561 is an apocalyptic number.

It is an amenable number.

4026526561 is a deficient number, since it is larger than the sum of its proper divisors (138063).

4026526561 is an equidigital number, since it uses as much as digits as its factorization.

4026526561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138062.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 4026526561 is about 63454.9175478150. The cubic root of 4026526561 is about 1590.9023477949.

The spelling of 4026526561 in words is "four billion, twenty-six million, five hundred twenty-six thousand, five hundred sixty-one".