33536663040 has 160 divisors (see below), whose sum is σ = 110671773696. Its totient is φ = 8654561280.

The previous prime is 33536663029. The next prime is 33536663047. The reversal of 33536663040 is 4036663533.

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×33536663040² (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 33536663040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33536663047) 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, 167649 + ... + 308511.

Almost surely, 2^33536663040 is an apocalyptic number.

33536663040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33536663040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55335886848).

33536663040 is an abundant number, since it is smaller than the sum of its proper divisors (77135110656).

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

33536663040 is a wasteful number, since it uses less digits than its factorization.

33536663040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140920 (or 140904 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 39.

The spelling of 33536663040 in words is "thirty-three billion, five hundred thirty-six million, six hundred sixty-three thousand, forty".