33125916709 has 2 divisors, whose sum is σ = 33125916710. Its totient is φ = 33125916708.

The previous prime is 33125916613. The next prime is 33125916731. The reversal of 33125916709 is 90761952133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29259813025 + 3866103684 = 171055^2 + 62178^2 .

It is an emirp because it is prime and its reverse (90761952133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33125916709 - 2¹⁵ = 33125883941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33125916209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16562958354 + 16562958355.

It is an arithmetic number, because the mean of its divisors is an integer number (16562958355).

Almost surely, 2^33125916709 is an apocalyptic number.

It is an amenable number.

33125916709 is a deficient number, since it is larger than the sum of its proper divisors (1).

33125916709 is an equidigital number, since it uses as much as digits as its factorization.

33125916709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 306180, while the sum is 46.

The spelling of 33125916709 in words is "thirty-three billion, one hundred twenty-five million, nine hundred sixteen thousand, seven hundred nine".