33691640736 has 48 divisors (see below), whose sum is σ = 95243680224. Its totient is φ = 10366658304.

The previous prime is 33691640711. The next prime is 33691640777. The reversal of 33691640736 is 63704619633.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×33691640736² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 13497006 + ... + 13499501.

It is an arithmetic number, because the mean of its divisors is an integer number (1984243338).

Almost surely, 2^33691640736 is an apocalyptic number.

It is an amenable number.

33691640736 is an abundant number, since it is smaller than the sum of its proper divisors (61552039488).

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

33691640736 is a wasteful number, since it uses less digits than its factorization.

33691640736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26996533 (or 26996525 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 48.

The spelling of 33691640736 in words is "thirty-three billion, six hundred ninety-one million, six hundred forty thousand, seven hundred thirty-six".