10261663820 has 24 divisors (see below), whose sum is σ = 21554273664. Its totient is φ = 4103755136.

The previous prime is 10261663813. The next prime is 10261663871. The reversal of 10261663820 is 2836616201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39512 + ... + 148608.

It is an arithmetic number, because the mean of its divisors is an integer number (898094736).

Almost surely, 2^10261663820 is an apocalyptic number.

10261663820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10261663820 is an abundant number, since it is smaller than the sum of its proper divisors (11292609844).

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

10261663820 is a wasteful number, since it uses less digits than its factorization.

10261663820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113809 (or 113807 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 10261663820 in words is "ten billion, two hundred sixty-one million, six hundred sixty-three thousand, eight hundred twenty".