33640537273 has 24 divisors (see below), whose sum is σ = 39276420000. Its totient is φ = 28729209600.

The previous prime is 33640537241. The next prime is 33640537289. The reversal of 33640537273 is 37273504633.

It is not a de Polignac number, because 33640537273 - 2⁵ = 33640537241 is a prime.

It is a super-2 number, since 2×33640537273² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33640537673) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26933353 + ... + 26934601.

It is an arithmetic number, because the mean of its divisors is an integer number (1636517500).

Almost surely, 2^33640537273 is an apocalyptic number.

It is an amenable number.

33640537273 is a deficient number, since it is larger than the sum of its proper divisors (5635882727).

33640537273 is a wasteful number, since it uses less digits than its factorization.

33640537273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837 (or 2830 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 43.

The spelling of 33640537273 in words is "thirty-three billion, six hundred forty million, five hundred thirty-seven thousand, two hundred seventy-three".