20691842010 has 160 divisors (see below), whose sum is σ = 58517147520. Its totient is φ = 4681966464.

The previous prime is 20691841957. The next prime is 20691842051. The reversal of 20691842010 is 1024819602.

20691842010 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 7417696 + ... + 7420484.

It is an arithmetic number, because the mean of its divisors is an integer number (365732172).

Almost surely, 2^20691842010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20691842010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29258573760).

20691842010 is an abundant number, since it is smaller than the sum of its proper divisors (37825305510).

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

20691842010 is a wasteful number, since it uses less digits than its factorization.

20691842010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930 (or 2909 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The spelling of 20691842010 in words is "twenty billion, six hundred ninety-one million, eight hundred forty-two thousand, ten".