33642157343 has 4 divisors (see below), whose sum is σ = 34462697808. Its totient is φ = 32821616880.

The previous prime is 33642157337. The next prime is 33642157369. The reversal of 33642157343 is 34375124633.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34375124633 = 4813 ⋅7142141.

It is a cyclic number.

It is not a de Polignac number, because 33642157343 - 2¹⁶ = 33642091807 is a prime.

It is a super-2 number, since 2×33642157343² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 820540423 = 33642157343 / (3 + 3 + 6 + 4 + 2 + 1 + 5 + 7 + 3 + 4 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33642157343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33642157303) 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, 410270171 + ... + 410270252.

It is an arithmetic number, because the mean of its divisors is an integer number (8615674452).

Almost surely, 2^33642157343 is an apocalyptic number.

33642157343 is a deficient number, since it is larger than the sum of its proper divisors (820540465).

33642157343 is an equidigital number, since it uses as much as digits as its factorization.

33642157343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820540464.

The product of its digits is 544320, while the sum is 41.

The spelling of 33642157343 in words is "thirty-three billion, six hundred forty-two million, one hundred fifty-seven thousand, three hundred forty-three".