195621130971 has 80 divisors (see below), whose sum is σ = 341425022400. Its totient is φ = 111573987840.

The previous prime is 195621130919. The next prime is 195621131023. The reversal of 195621130971 is 179031126591.

195621130971 is a `hidden beast` number, since 1 + 9 + 5 + 621 + 13 + 0 + 9 + 7 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (195621130919) and next prime (195621131023).

It is not a de Polignac number, because 195621130971 - 2⁹ = 195621130459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195621135971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 15468811 + ... + 15481451.

It is an arithmetic number, because the mean of its divisors is an integer number (4267812780).

Almost surely, 2^195621130971 is an apocalyptic number.

195621130971 is a deficient number, since it is larger than the sum of its proper divisors (145803891429).

195621130971 is an equidigital number, since it uses as much as digits as its factorization.

195621130971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13231 (or 13208 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 45.

The spelling of 195621130971 in words is "one hundred ninety-five billion, six hundred twenty-one million, one hundred thirty thousand, nine hundred seventy-one".