33738705381 has 4 divisors (see below), whose sum is σ = 44984940512. Its totient is φ = 22492470252.

The previous prime is 33738705307. The next prime is 33738705397. The reversal of 33738705381 is 18350783733.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 33738705381 - 2⁹ = 33738704869 is a prime.

It is a super-2 number, since 2×33738705381² (a number of 22 digits) contains 22 as substring.

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 33738705381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33738700381) 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, 5623117561 + ... + 5623117566.

It is an arithmetic number, because the mean of its divisors is an integer number (11246235128).

Almost surely, 2^33738705381 is an apocalyptic number.

It is an amenable number.

33738705381 is a deficient number, since it is larger than the sum of its proper divisors (11246235131).

33738705381 is a wasteful number, since it uses less digits than its factorization.

33738705381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11246235130.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 33738705381 in words is "thirty-three billion, seven hundred thirty-eight million, seven hundred five thousand, three hundred eighty-one".