20676729733 has 4 divisors (see below), whose sum is σ = 22556432448. Its totient is φ = 18797027020.

The previous prime is 20676729713. The next prime is 20676729739. The reversal of 20676729733 is 33792767602.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20676729733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20676729739) 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, 939851341 + ... + 939851362.

It is an arithmetic number, because the mean of its divisors is an integer number (5639108112).

Almost surely, 2^20676729733 is an apocalyptic number.

It is an amenable number.

20676729733 is a deficient number, since it is larger than the sum of its proper divisors (1879702715).

20676729733 is a wasteful number, since it uses less digits than its factorization.

20676729733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879702714.

The product of its (nonzero) digits is 4000752, while the sum is 52.

The spelling of 20676729733 in words is "twenty billion, six hundred seventy-six million, seven hundred twenty-nine thousand, seven hundred thirty-three".