33011400664 has 64 divisors (see below), whose sum is σ = 68508915840. Its totient is φ = 14786530560.

The previous prime is 33011400661. The next prime is 33011400689. The reversal of 33011400664 is 46600411033.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33011400661) 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, 13379959 + ... + 13382425.

It is an arithmetic number, because the mean of its divisors is an integer number (1070451810).

Almost surely, 2^33011400664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33011400664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34254457920).

33011400664 is an abundant number, since it is smaller than the sum of its proper divisors (35497515176).

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

33011400664 is a wasteful number, since it uses less digits than its factorization.

33011400664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4640 (or 4636 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 33011400664 its reverse (46600411033), we get a palindrome (79611811697).

The spelling of 33011400664 in words is "thirty-three billion, eleven million, four hundred thousand, six hundred sixty-four".