215453140401 has 4 divisors (see below), whose sum is σ = 287270853872. Its totient is φ = 143635426932.

The previous prime is 215453140351. The next prime is 215453140403. The reversal of 215453140401 is 104041354512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-215453140401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215453140403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35908856731 + ... + 35908856736.

It is an arithmetic number, because the mean of its divisors is an integer number (71817713468).

Almost surely, 2^215453140401 is an apocalyptic number.

It is an amenable number.

215453140401 is a deficient number, since it is larger than the sum of its proper divisors (71817713471).

215453140401 is an equidigital number, since it uses as much as digits as its factorization.

215453140401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71817713470.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 215453140401 its reverse (104041354512), we get a palindrome (319494494913).

The spelling of 215453140401 in words is "two hundred fifteen billion, four hundred fifty-three million, one hundred forty thousand, four hundred one".