20102850681 has 8 divisors (see below), whose sum is σ = 26815878144. Its totient is φ = 13395861840.

The previous prime is 20102850637. The next prime is 20102850683. The reversal of 20102850681 is 18605820102.

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

It is not a de Polignac number, because 20102850681 - 2¹⁵ = 20102817913 is a prime.

It is a super-2 number, since 2×20102850681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20102850683) 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, 1501881 + ... + 1515206.

It is an arithmetic number, because the mean of its divisors is an integer number (3351984768).

Almost surely, 2^20102850681 is an apocalyptic number.

It is an amenable number.

20102850681 is a deficient number, since it is larger than the sum of its proper divisors (6713027463).

20102850681 is a wasteful number, since it uses less digits than its factorization.

20102850681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019311.

The product of its (nonzero) digits is 7680, while the sum is 33.

The spelling of 20102850681 in words is "twenty billion, one hundred two million, eight hundred fifty thousand, six hundred eighty-one".