20849231010 has 64 divisors (see below), whose sum is σ = 51418063872. Its totient is φ = 5406633216.

The previous prime is 20849230981. The next prime is 20849231083. The reversal of 20849231010 is 1013294802.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2745679 + ... + 2753261.

It is an arithmetic number, because the mean of its divisors is an integer number (803407248).

Almost surely, 2^20849231010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20849231010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25709031936).

20849231010 is an abundant number, since it is smaller than the sum of its proper divisors (30568832862).

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

20849231010 is a wasteful number, since it uses less digits than its factorization.

20849231010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10107.

The product of its (nonzero) digits is 3456, while the sum is 30.

The spelling of 20849231010 in words is "twenty billion, eight hundred forty-nine million, two hundred thirty-one thousand, ten".