33768628421 has 16 divisors (see below), whose sum is σ = 38003900928. Its totient is φ = 29735035200.

The previous prime is 33768628381. The next prime is 33768628433. The reversal of 33768628421 is 12482686733.

It is not a de Polignac number, because 33768628421 - 2¹⁸ = 33768366277 is a prime.

It is a super-2 number, since 2×33768628421² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33768628421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33768628441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95270 + ... + 276791.

It is an arithmetic number, because the mean of its divisors is an integer number (2375243808).

Almost surely, 2^33768628421 is an apocalyptic number.

It is an amenable number.

33768628421 is a deficient number, since it is larger than the sum of its proper divisors (4235272507).

33768628421 is a wasteful number, since it uses less digits than its factorization.

33768628421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372332.

The product of its digits is 2322432, while the sum is 50.

The spelling of 33768628421 in words is "thirty-three billion, seven hundred sixty-eight million, six hundred twenty-eight thousand, four hundred twenty-one".