20671969237 has 8 divisors (see below), whose sum is σ = 20708556800. Its totient is φ = 20635416144.

The previous prime is 20671969183. The next prime is 20671969243. The reversal of 20671969237 is 73296917602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20671969237 - 2¹⁵ = 20671936469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20671969037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1382839 + ... + 1397707.

It is an arithmetic number, because the mean of its divisors is an integer number (2588569600).

Almost surely, 2^20671969237 is an apocalyptic number.

It is an amenable number.

20671969237 is a deficient number, since it is larger than the sum of its proper divisors (36587563).

20671969237 is a wasteful number, since it uses less digits than its factorization.

20671969237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17235.

The product of its (nonzero) digits is 1714608, while the sum is 52.

The spelling of 20671969237 in words is "twenty billion, six hundred seventy-one million, nine hundred sixty-nine thousand, two hundred thirty-seven".