20106603328 has 56 divisors (see below), whose sum is σ = 46346489984. Its totient is φ = 8475840000.

The previous prime is 20106603313. The next prime is 20106603371. The reversal of 20106603328 is 82330660102.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 20106603328.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340548 + ... + 395203.

Almost surely, 2^20106603328 is an apocalyptic number.

20106603328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20106603328 is an abundant number, since it is smaller than the sum of its proper divisors (26239886656).

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

20106603328 is an equidigital number, since it uses as much as digits as its factorization.

20106603328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735831 (or 735821 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 20106603328 in words is "twenty billion, one hundred six million, six hundred three thousand, three hundred twenty-eight".