195449520216 has 16 divisors (see below), whose sum is σ = 488623800600. Its totient is φ = 65149840064.

The previous prime is 195449520191. The next prime is 195449520263. The reversal of 195449520216 is 612025944591.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4071864981 + ... + 4071865028.

Almost surely, 2^195449520216 is an apocalyptic number.

It is an amenable number.

195449520216 is an abundant number, since it is smaller than the sum of its proper divisors (293174280384).

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

195449520216 is a wasteful number, since it uses less digits than its factorization.

195449520216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8143730018 (or 8143730014 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 48.

The spelling of 195449520216 in words is "one hundred ninety-five billion, four hundred forty-nine million, five hundred twenty thousand, two hundred sixteen".