195878966472 has 512 divisors, whose sum is σ = 671961600000. Its totient is φ = 52700191488.

The previous prime is 195878966471. The next prime is 195878966483. The reversal of 195878966472 is 274669878591.

195878966472 is a `hidden beast` number, since 1 + 95 + 8 + 7 + 8 + 9 + 66 + 472 = 666.

It is a super-2 number, since 2×195878966472² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 195878966472.

It is not an unprimeable number, because it can be changed into a prime (195878966471) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 319541238 + ... + 319541850.

It is an arithmetic number, because the mean of its divisors is an integer number (1312425000).

Almost surely, 2^195878966472 is an apocalyptic number.

195878966472 is a gapful number since it is divisible by the number (12) 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 195878966472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335980800000).

195878966472 is an abundant number, since it is smaller than the sum of its proper divisors (476082633528).

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

195878966472 is a wasteful number, since it uses less digits than its factorization.

195878966472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895 (or 871 counting only the distinct ones).

The product of its digits is 365783040, while the sum is 72.

The spelling of 195878966472 in words is "one hundred ninety-five billion, eight hundred seventy-eight million, nine hundred sixty-six thousand, four hundred seventy-two".