20106443660 has 48 divisors (see below), whose sum is σ = 44722692000. Its totient is φ = 7566873600.

The previous prime is 20106443653. The next prime is 20106443671. The reversal of 20106443660 is 6634460102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1181210 + ... + 1198110.

It is an arithmetic number, because the mean of its divisors is an integer number (931722750).

Almost surely, 2^20106443660 is an apocalyptic number.

20106443660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20106443660 is an abundant number, since it is smaller than the sum of its proper divisors (24616248340).

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

20106443660 is a wasteful number, since it uses less digits than its factorization.

20106443660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20426 (or 20424 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 20106443660 in words is "twenty billion, one hundred six million, four hundred forty-three thousand, six hundred sixty".