636970036403 has 2 divisors, whose sum is σ = 636970036404. Its totient is φ = 636970036402.

The previous prime is 636970036331. The next prime is 636970036411. The reversal of 636970036403 is 304630079636.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 636970036403 - 2³⁴ = 619790167219 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (636970036463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318485018201 + 318485018202.

It is an arithmetic number, because the mean of its divisors is an integer number (318485018202).

Almost surely, 2^636970036403 is an apocalyptic number.

636970036403 is a deficient number, since it is larger than the sum of its proper divisors (1).

636970036403 is an equidigital number, since it uses as much as digits as its factorization.

636970036403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 47.

The spelling of 636970036403 in words is "six hundred thirty-six billion, nine hundred seventy million, thirty-six thousand, four hundred three".