33837138672 has 20 divisors (see below), whose sum is σ = 87412608360. Its totient is φ = 11279046208.

The previous prime is 33837138653. The next prime is 33837138677. The reversal of 33837138672 is 27683173833.

It is a super-2 number, since 2×33837138672² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33837138677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352470147 + ... + 352470242.

It is an arithmetic number, because the mean of its divisors is an integer number (4370630418).

Almost surely, 2^33837138672 is an apocalyptic number.

It is an amenable number.

33837138672 is an abundant number, since it is smaller than the sum of its proper divisors (53575469688).

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

33837138672 is a wasteful number, since it uses less digits than its factorization.

33837138672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704940400 (or 704940394 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 51.

The spelling of 33837138672 in words is "thirty-three billion, eight hundred thirty-seven million, one hundred thirty-eight thousand, six hundred seventy-two".