33961381113 has 16 divisors (see below), whose sum is σ = 50991869952. Its totient is φ = 19918698000.

The previous prime is 33961381043. The next prime is 33961381121. The reversal of 33961381113 is 31118316933.

It is not a de Polignac number, because 33961381113 - 2¹⁷ = 33961250041 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (33961381913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16597893 + ... + 16599938.

It is an arithmetic number, because the mean of its divisors is an integer number (3186991872).

Almost surely, 2^33961381113 is an apocalyptic number.

33961381113 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

33961381113 is a deficient number, since it is larger than the sum of its proper divisors (17030488839).

33961381113 is a wasteful number, since it uses less digits than its factorization.

33961381113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33197876.

The product of its digits is 34992, while the sum is 39.

The spelling of 33961381113 in words is "thirty-three billion, nine hundred sixty-one million, three hundred eighty-one thousand, one hundred thirteen".