33666000157 has 2 divisors, whose sum is σ = 33666000158. Its totient is φ = 33666000156.

The previous prime is 33666000139. The next prime is 33666000233. The reversal of 33666000157 is 75100066633.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22006535716 + 11659464441 = 148346^2 + 107979^2 .

It is a cyclic number.

It is not a de Polignac number, because 33666000157 - 2⁷ = 33666000029 is a prime.

It is a super-2 number, since 2×33666000157² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33666000107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16833000078 + 16833000079.

It is an arithmetic number, because the mean of its divisors is an integer number (16833000079).

Almost surely, 2^33666000157 is an apocalyptic number.

It is an amenable number.

33666000157 is a deficient number, since it is larger than the sum of its proper divisors (1).

33666000157 is an equidigital number, since it uses as much as digits as its factorization.

33666000157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 37.

The spelling of 33666000157 in words is "thirty-three billion, six hundred sixty-six million, one hundred fifty-seven", and thus it is an aban number.