33700043440 has 160 divisors (see below), whose sum is σ = 94157116416. Its totient is φ = 10967024640.

The previous prime is 33700043431. The next prime is 33700043459. The reversal of 33700043440 is 4434000733.

It is a super-2 number, since 2×33700043440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 33700043399 and 33700043408.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1677294 + ... + 1697266.

Almost surely, 2^33700043440 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 33700043440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47078558208).

33700043440 is an abundant number, since it is smaller than the sum of its proper divisors (60457072976).

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

33700043440 is a wasteful number, since it uses less digits than its factorization.

33700043440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20147 (or 20141 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 28.

The spelling of 33700043440 in words is "thirty-three billion, seven hundred million, forty-three thousand, four hundred forty".