195420580138 has 16 divisors (see below), whose sum is σ = 336742499520. Its totient is φ = 83317729536.

The previous prime is 195420580073. The next prime is 195420580139. The reversal of 195420580138 is 831085024591.

It is not an unprimeable number, because it can be changed into a prime (195420580139) 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, 36159508 + ... + 36164911.

It is an arithmetic number, because the mean of its divisors is an integer number (21046406220).

Almost surely, 2^195420580138 is an apocalyptic number.

195420580138 is a deficient number, since it is larger than the sum of its proper divisors (141321919382).

195420580138 is a wasteful number, since it uses less digits than its factorization.

195420580138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72324621.

The product of its (nonzero) digits is 345600, while the sum is 46.

The spelling of 195420580138 in words is "one hundred ninety-five billion, four hundred twenty million, five hundred eighty thousand, one hundred thirty-eight".