20195374080 has 704 divisors, whose sum is σ = 78177189888. Its totient is φ = 4352901120.

The previous prime is 20195374051. The next prime is 20195374081. The reversal of 20195374080 is 8047359102.

It is a super-2 number, since 2×20195374080² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20195374081) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 243317719 + ... + 243317801.

Almost surely, 2^20195374080 is an apocalyptic number.

20195374080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20195374080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39088594944).

20195374080 is an abundant number, since it is smaller than the sum of its proper divisors (57981815808).

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

20195374080 is a wasteful number, since it uses less digits than its factorization.

20195374080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 20195374080 in words is "twenty billion, one hundred ninety-five million, three hundred seventy-four thousand, eighty".