33140725081 has 2 divisors, whose sum is σ = 33140725082. Its totient is φ = 33140725080.

The previous prime is 33140725069. The next prime is 33140725099. The reversal of 33140725081 is 18052704133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20838366025 + 12302359056 = 144355^2 + 110916^2 .

It is a cyclic number.

It is not a de Polignac number, because 33140725081 - 2³³ = 24550790489 is a prime.

It is a super-3 number, since 3×33140725081³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (33140725381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16570362540 + 16570362541.

It is an arithmetic number, because the mean of its divisors is an integer number (16570362541).

Almost surely, 2^33140725081 is an apocalyptic number.

It is an amenable number.

33140725081 is a deficient number, since it is larger than the sum of its proper divisors (1).

33140725081 is an equidigital number, since it uses as much as digits as its factorization.

33140725081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 33140725081 in words is "thirty-three billion, one hundred forty million, seven hundred twenty-five thousand, eighty-one".