33506821077 has 8 divisors (see below), whose sum is σ = 45287758464. Its totient is φ = 22031882208.

The previous prime is 33506821057. The next prime is 33506821087. The reversal of 33506821077 is 77012860533.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 33506821077 - 2¹⁸ = 33506558933 is a prime.

It is a super-2 number, since 2×33506821077² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33506821057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76499373 + ... + 76499810.

It is an arithmetic number, because the mean of its divisors is an integer number (5660969808).

Almost surely, 2^33506821077 is an apocalyptic number.

It is an amenable number.

33506821077 is a deficient number, since it is larger than the sum of its proper divisors (11780937387).

33506821077 is a wasteful number, since it uses less digits than its factorization.

33506821077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152999259.

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 33506821077 in words is "thirty-three billion, five hundred six million, eight hundred twenty-one thousand, seventy-seven".