18633836707133 has 2 divisors, whose sum is σ = 18633836707134. Its totient is φ = 18633836707132.

The previous prime is 18633836707103. The next prime is 18633836707223. The reversal of 18633836707133 is 33170763833681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16348412362489 + 2285424344644 = 4043317^2 + 1511762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18633836707133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18633836707103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9316918353566 + 9316918353567.

It is an arithmetic number, because the mean of its divisors is an integer number (9316918353567).

Almost surely, 2^{18633836707133} is an apocalyptic number.

It is an amenable number.

18633836707133 is a deficient number, since it is larger than the sum of its proper divisors (1).

18633836707133 is an equidigital number, since it uses as much as digits as its factorization.

18633836707133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27433728, while the sum is 59.

The spelling of 18633836707133 in words is "eighteen trillion, six hundred thirty-three billion, eight hundred thirty-six million, seven hundred seven thousand, one hundred thirty-three".