20986478113 has 8 divisors (see below), whose sum is σ = 21164273856. Its totient is φ = 20808949200.

The previous prime is 20986478099. The next prime is 20986478141. The reversal of 20986478113 is 31187468902.

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 20986478113 - 2⁹ = 20986477601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20986478713) 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, 92868 + ... + 224938.

It is an arithmetic number, because the mean of its divisors is an integer number (2645534232).

Almost surely, 2^20986478113 is an apocalyptic number.

It is an amenable number.

20986478113 is a deficient number, since it is larger than the sum of its proper divisors (177795743).

20986478113 is a wasteful number, since it uses less digits than its factorization.

20986478113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133415.

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 20986478113 in words is "twenty billion, nine hundred eighty-six million, four hundred seventy-eight thousand, one hundred thirteen".