20133381739 has 4 divisors (see below), whose sum is σ = 20135375280. Its totient is φ = 20131388200.

The previous prime is 20133381733. The next prime is 20133381743. The reversal of 20133381739 is 93718333102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20133381739 - 2²⁷ = 19999164011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20133381733) 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, 981544 + ... + 1001845.

It is an arithmetic number, because the mean of its divisors is an integer number (5033843820).

Almost surely, 2^20133381739 is an apocalyptic number.

20133381739 is a deficient number, since it is larger than the sum of its proper divisors (1993541).

20133381739 is a wasteful number, since it uses less digits than its factorization.

20133381739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993540.

The product of its (nonzero) digits is 81648, while the sum is 40.

The spelling of 20133381739 in words is "twenty billion, one hundred thirty-three million, three hundred eighty-one thousand, seven hundred thirty-nine".