33640350312 has 32 divisors (see below), whose sum is σ = 89047987200. Its totient is φ = 10553835264.

The previous prime is 33640350299. The next prime is 33640350377. The reversal of 33640350312 is 21305304633.

It is a super-2 number, since 2×33640350312² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33640350312.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 41225512 + ... + 41226327.

It is an arithmetic number, because the mean of its divisors is an integer number (2782749600).

Almost surely, 2^33640350312 is an apocalyptic number.

It is an amenable number.

33640350312 is an abundant number, since it is smaller than the sum of its proper divisors (55407636888).

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

33640350312 is a wasteful number, since it uses less digits than its factorization.

33640350312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82451865 (or 82451861 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 30.

Adding to 33640350312 its reverse (21305304633), we get a palindrome (54945654945).

The spelling of 33640350312 in words is "thirty-three billion, six hundred forty million, three hundred fifty thousand, three hundred twelve".