20195334140 has 24 divisors (see below), whose sum is σ = 42412879152. Its totient is φ = 8077623680.

The previous prime is 20195334037. The next prime is 20195334143. The reversal of 20195334140 is 4143359102.

It is a junction number, because it is equal to n+sod(n) for n = 20195334097 and 20195334106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20195334143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570560 + ... + 604920.

It is an arithmetic number, because the mean of its divisors is an integer number (1767203298).

Almost surely, 2^20195334140 is an apocalyptic number.

20195334140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20195334140 is an abundant number, since it is smaller than the sum of its proper divisors (22217545012).

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

20195334140 is a wasteful number, since it uses less digits than its factorization.

20195334140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63757 (or 63755 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 20195334140 in words is "twenty billion, one hundred ninety-five million, three hundred thirty-four thousand, one hundred forty".