20201686835 has 8 divisors (see below), whose sum is σ = 26445844656. Its totient is φ = 14692135840.

The previous prime is 20201686819. The next prime is 20201686847. The reversal of 20201686835 is 53868610202.

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

It is not a de Polignac number, because 20201686835 - 2⁴ = 20201686819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20201686792 and 20201686801.

It is an unprimeable number.

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, 183651644 + ... + 183651753.

It is an arithmetic number, because the mean of its divisors is an integer number (3305730582).

Almost surely, 2^20201686835 is an apocalyptic number.

20201686835 is a deficient number, since it is larger than the sum of its proper divisors (6244157821).

20201686835 is a wasteful number, since it uses less digits than its factorization.

20201686835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367303413.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 20201686835 in words is "twenty billion, two hundred one million, six hundred eighty-six thousand, eight hundred thirty-five".