33798927978 has 24 divisors (see below), whose sum is σ = 77538717828. Its totient is φ = 10603585152.

The previous prime is 33798927971. The next prime is 33798927989. The reversal of 33798927978 is 87972989733.

It can be written as a sum of positive squares in 2 ways, for example, as 30570074649 + 3228853329 = 174843^2 + 56823^2 .

It is a super-2 number, since 2×33798927978² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33798927971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55226701 + ... + 55227312.

Almost surely, 2^33798927978 is an apocalyptic number.

33798927978 is an abundant number, since it is smaller than the sum of its proper divisors (43739789850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33798927978 is a wasteful number, since it uses less digits than its factorization.

33798927978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110454038 (or 110454035 counting only the distinct ones).

The product of its digits is 288054144, while the sum is 72.

The spelling of 33798927978 in words is "thirty-three billion, seven hundred ninety-eight million, nine hundred twenty-seven thousand, nine hundred seventy-eight".