195354276121 has 9 divisors (see below), whose sum is σ = 202336194333. Its totient is φ = 188605546080.

The previous prime is 195354276097. The next prime is 195354276127. The reversal of 195354276121 is 121672453591.

The square root of 195354276121 is 441989.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 21181600521 + 174172675600 = 145539^2 + 417340^2 .

It is not a de Polignac number, because 195354276121 - 2⁷ = 195354275993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195354276127) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12810061 + ... + 12825301.

Almost surely, 2^195354276121 is an apocalyptic number.

195354276121 is the 441989-th square number.

195354276121 is the 220995-th centered octagonal number.

It is an amenable number.

195354276121 is a deficient number, since it is larger than the sum of its proper divisors (6981918212).

195354276121 is an frugal number, since it uses more digits than its factorization.

195354276121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30540 (or 15270 counting only the distinct ones).

The product of its digits is 453600, while the sum is 46.

The spelling of 195354276121 in words is "one hundred ninety-five billion, three hundred fifty-four million, two hundred seventy-six thousand, one hundred twenty-one".