33438133778 has 16 divisors (see below), whose sum is σ = 57328298304. Its totient is φ = 14329182960.

The previous prime is 33438133681. The next prime is 33438133819. The reversal of 33438133778 is 87733183433.

It is a super-2 number, since 2×33438133778² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29693 + ... + 260303.

It is an arithmetic number, because the mean of its divisors is an integer number (3583018644).

Almost surely, 2^33438133778 is an apocalyptic number.

33438133778 is a deficient number, since it is larger than the sum of its proper divisors (23890164526).

33438133778 is a wasteful number, since it uses less digits than its factorization.

33438133778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240977.

The product of its digits is 3048192, while the sum is 50.

The spelling of 33438133778 in words is "thirty-three billion, four hundred thirty-eight million, one hundred thirty-three thousand, seven hundred seventy-eight".