215453975147 has 4 divisors (see below), whose sum is σ = 215506799520. Its totient is φ = 215401150776.

The previous prime is 215453975129. The next prime is 215453975183. The reversal of 215453975147 is 741579354512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 215453975147 - 2¹⁴ = 215453958763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215453975747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26406068 + ... + 26414225.

It is an arithmetic number, because the mean of its divisors is an integer number (53876699880).

Almost surely, 2^215453975147 is an apocalyptic number.

215453975147 is a deficient number, since it is larger than the sum of its proper divisors (52824373).

215453975147 is an equidigital number, since it uses as much as digits as its factorization.

215453975147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52824372.

The product of its digits is 5292000, while the sum is 53.

The spelling of 215453975147 in words is "two hundred fifteen billion, four hundred fifty-three million, nine hundred seventy-five thousand, one hundred forty-seven".