215453531352201 has 4 divisors (see below), whose sum is σ = 287271375136272. Its totient is φ = 143635687568132.

The previous prime is 215453531352187. The next prime is 215453531352211. The reversal of 215453531352201 is 102253135354512.

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 cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215453531352201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215453531352211) 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, 35908921892031 + ... + 35908921892036.

It is an arithmetic number, because the mean of its divisors is an integer number (71817843784068).

Almost surely, 2^{215453531352201} is an apocalyptic number.

It is an amenable number.

215453531352201 is a deficient number, since it is larger than the sum of its proper divisors (71817843784071).

215453531352201 is an equidigital number, since it uses as much as digits as its factorization.

215453531352201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71817843784070.

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 215453531352201 in words is "two hundred fifteen trillion, four hundred fifty-three billion, five hundred thirty-one million, three hundred fifty-two thousand, two hundred one".