33677968428 has 120 divisors (see below), whose sum is σ = 94938468240. Its totient is φ = 10348767360.

The previous prime is 33677968427. The next prime is 33677968459. The reversal of 33677968428 is 82486977633.

It is a super-2 number, since 2×33677968428² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33677968427) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3453183 + ... + 3462921.

It is an arithmetic number, because the mean of its divisors is an integer number (791153902).

Almost surely, 2^33677968428 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 33677968428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47469234120).

33677968428 is an abundant number, since it is smaller than the sum of its proper divisors (61260499812).

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

33677968428 is a wasteful number, since it uses less digits than its factorization.

33677968428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10589 (or 10578 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 63.

The spelling of 33677968428 in words is "thirty-three billion, six hundred seventy-seven million, nine hundred sixty-eight thousand, four hundred twenty-eight".