20727934663 has 8 divisors (see below), whose sum is σ = 20822009040. Its totient is φ = 20633952000.

The previous prime is 20727934657. The next prime is 20727934681. The reversal of 20727934663 is 36643972702.

It is a happy number.

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 20727934663 - 2²¹ = 20725837511 is a prime.

It is a super-3 number, since 3×20727934663³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20727934603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452281 + ... + 495997.

It is an arithmetic number, because the mean of its divisors is an integer number (2602751130).

Almost surely, 2^20727934663 is an apocalyptic number.

20727934663 is a deficient number, since it is larger than the sum of its proper divisors (94074377).

20727934663 is a wasteful number, since it uses less digits than its factorization.

20727934663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45857.

The product of its (nonzero) digits is 2286144, while the sum is 49.

The spelling of 20727934663 in words is "twenty billion, seven hundred twenty-seven million, nine hundred thirty-four thousand, six hundred sixty-three".