20355470112 has 48 divisors (see below), whose sum is σ = 54338770080. Its totient is φ = 6670152192.

The previous prime is 20355470111. The next prime is 20355470153. The reversal of 20355470112 is 21107455302.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 20355470112.

It is not an unprimeable number, because it can be changed into a prime (20355470111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1791253 + ... + 1802580.

It is an arithmetic number, because the mean of its divisors is an integer number (1132057710).

Almost surely, 2^20355470112 is an apocalyptic number.

It is an amenable number.

20355470112 is an abundant number, since it is smaller than the sum of its proper divisors (33983299968).

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

20355470112 is a wasteful number, since it uses less digits than its factorization.

20355470112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593905 (or 3593897 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The spelling of 20355470112 in words is "twenty billion, three hundred fifty-five million, four hundred seventy thousand, one hundred twelve".