33440975857 has 2 divisors, whose sum is σ = 33440975858. Its totient is φ = 33440975856.

The previous prime is 33440975851. The next prime is 33440975861. The reversal of 33440975857 is 75857904433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33151669776 + 289306081 = 182076^2 + 17009^2 .

It is a cyclic number.

It is not a de Polignac number, because 33440975857 - 2³ = 33440975849 is a prime.

It is a super-2 number, since 2×33440975857² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33440975798 and 33440975807.

It is not a weakly prime, because it can be changed into another prime (33440975851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16720487928 + 16720487929.

It is an arithmetic number, because the mean of its divisors is an integer number (16720487929).

Almost surely, 2^33440975857 is an apocalyptic number.

It is an amenable number.

33440975857 is a deficient number, since it is larger than the sum of its proper divisors (1).

33440975857 is an equidigital number, since it uses as much as digits as its factorization.

33440975857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12700800, while the sum is 55.

The spelling of 33440975857 in words is "thirty-three billion, four hundred forty million, nine hundred seventy-five thousand, eight hundred fifty-seven".