2636006521 has 2 divisors, whose sum is σ = 2636006522. Its totient is φ = 2636006520.

The previous prime is 2636006491. The next prime is 2636006557. The reversal of 2636006521 is 1256006362.

2636006521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2635692921 + 313600 = 51339^2 + 560^2 .

It is a cyclic number.

It is not a de Polignac number, because 2636006521 - 2⁵ = 2636006489 is a prime.

It is not a weakly prime, because it can be changed into another prime (2636096521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1318003260 + 1318003261.

It is an arithmetic number, because the mean of its divisors is an integer number (1318003261).

Almost surely, 2^2636006521 is an apocalyptic number.

It is an amenable number.

2636006521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2636006521 is an equidigital number, since it uses as much as digits as its factorization.

2636006521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 2636006521 is about 51342.0541174581. The cubic root of 2636006521 is about 1381.3874097213.

The spelling of 2636006521 in words is "two billion, six hundred thirty-six million, six thousand, five hundred twenty-one".