20345196100 has 18 divisors (see below), whose sum is σ = 44149075754. Its totient is φ = 8138078400.

The previous prime is 20345196071. The next prime is 20345196103. The reversal of 20345196100 is 169154302.

It can be written as a sum of positive squares in 3 ways, for example, as 99321156 + 20245874944 = 9966^2 + 142288^2 .

It is not an unprimeable number, because it can be changed into a prime (20345196103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101725881 + ... + 101726080.

Almost surely, 2^20345196100 is an apocalyptic number.

20345196100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20345196100 is an abundant number, since it is smaller than the sum of its proper divisors (23803879654).

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

20345196100 is a wasteful number, since it uses less digits than its factorization.

20345196100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203451975 (or 203451968 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 20345196100 in words is "twenty billion, three hundred forty-five million, one hundred ninety-six thousand, one hundred".