33241243978 has 4 divisors (see below), whose sum is σ = 49861865970. Its totient is φ = 16620621988.

The previous prime is 33241243967. The next prime is 33241243979. The reversal of 33241243978 is 87934214233.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19199704969 + 14041539009 = 138563^2 + 118497^2 .

It is a super-2 number, since 2×33241243978² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33241243979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8310310993 + ... + 8310310996.

Almost surely, 2^33241243978 is an apocalyptic number.

33241243978 is a deficient number, since it is larger than the sum of its proper divisors (16620621992).

33241243978 is a wasteful number, since it uses less digits than its factorization.

33241243978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16620621991.

The product of its digits is 870912, while the sum is 46.

The spelling of 33241243978 in words is "thirty-three billion, two hundred forty-one million, two hundred forty-three thousand, nine hundred seventy-eight".