66100050053563 has 2 divisors, whose sum is σ = 66100050053564. Its totient is φ = 66100050053562.

The previous prime is 66100050053539. The next prime is 66100050053581. The reversal of 66100050053563 is 36535005000166.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66100050053563 - 2²⁵ = 66100016499131 is a prime.

It is not a weakly prime, because it can be changed into another prime (66100050053503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33050025026781 + 33050025026782.

It is an arithmetic number, because the mean of its divisors is an integer number (33050025026782).

Almost surely, 2^{66100050053563} is an apocalyptic number.

66100050053563 is a deficient number, since it is larger than the sum of its proper divisors (1).

66100050053563 is an equidigital number, since it uses as much as digits as its factorization.

66100050053563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243000, while the sum is 40.

The spelling of 66100050053563 in words is "sixty-six trillion, one hundred billion, fifty million, fifty-three thousand, five hundred sixty-three".