195376915451 has 4 divisors (see below), whose sum is σ = 195462123552. Its totient is φ = 195291707352.

The previous prime is 195376915441. The next prime is 195376915453. The reversal of 195376915451 is 154519673591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154519673591 = 347 ⋅445301653.

It is a cyclic number.

It is not a de Polignac number, because 195376915451 - 2³⁰ = 194303173627 is a prime.

It is a super-2 number, since 2×195376915451² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195376915453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42600611 + ... + 42605196.

It is an arithmetic number, because the mean of its divisors is an integer number (48865530888).

Almost surely, 2^195376915451 is an apocalyptic number.

195376915451 is a deficient number, since it is larger than the sum of its proper divisors (85208101).

195376915451 is an equidigital number, since it uses as much as digits as its factorization.

195376915451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85208100.

The product of its digits is 5103000, while the sum is 56.

The spelling of 195376915451 in words is "one hundred ninety-five billion, three hundred seventy-six million, nine hundred fifteen thousand, four hundred fifty-one".