20869001010 has 192 divisors, whose sum is σ = 66517790976. Its totient is φ = 4466880000.

The previous prime is 20869000991. The next prime is 20869001017. The reversal of 20869001010 is 1010096802.

It is not an unprimeable number, because it can be changed into a prime (20869001017) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 260760 + ... + 331260.

It is an arithmetic number, because the mean of its divisors is an integer number (346446828).

Almost surely, 2^20869001010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20869001010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33258895488).

20869001010 is an abundant number, since it is smaller than the sum of its proper divisors (45648789966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20869001010 is a wasteful number, since it uses less digits than its factorization.

20869001010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70561 (or 70558 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

Adding to 20869001010 its reverse (1010096802), we get a palindrome (21879097812).

The spelling of 20869001010 in words is "twenty billion, eight hundred sixty-nine million, one thousand, ten".