33157843940 has 72 divisors (see below), whose sum is σ = 75484882368. Its totient is φ = 12229077120.

The previous prime is 33157843937. The next prime is 33157843967. The reversal of 33157843940 is 4934875133.

It is a super-2 number, since 2×33157843940² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3276929 + ... + 3287031.

It is an arithmetic number, because the mean of its divisors is an integer number (1048401144).

Almost surely, 2^33157843940 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 33157843940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37742441184).

33157843940 is an abundant number, since it is smaller than the sum of its proper divisors (42327038428).

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

33157843940 is a wasteful number, since it uses less digits than its factorization.

33157843940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11109 (or 11094 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 33157843940 in words is "thirty-three billion, one hundred fifty-seven million, eight hundred forty-three thousand, nine hundred forty".