33640434516 has 24 divisors (see below), whose sum is σ = 84532374304. Its totient is φ = 10350902880.

The previous prime is 33640434511. The next prime is 33640434551. The reversal of 33640434516 is 61543404633.

It is a super-2 number, since 2×33640434516² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33640434511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107821750 + ... + 107822061.

Almost surely, 2^33640434516 is an apocalyptic number.

It is an amenable number.

33640434516 is an abundant number, since it is smaller than the sum of its proper divisors (50891939788).

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

33640434516 is a wasteful number, since it uses less digits than its factorization.

33640434516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215643831 (or 215643829 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 39.

The spelling of 33640434516 in words is "thirty-three billion, six hundred forty million, four hundred thirty-four thousand, five hundred sixteen".