215065026401 has 8 divisors (see below), whose sum is σ = 218717785440. Its totient is φ = 211412520448.

The previous prime is 215065026367. The next prime is 215065026403. The reversal of 215065026401 is 104620560512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215065026401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215065026403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2579570 + ... + 2661636.

It is an arithmetic number, because the mean of its divisors is an integer number (27339723180).

Almost surely, 2^215065026401 is an apocalyptic number.

It is an amenable number.

215065026401 is a deficient number, since it is larger than the sum of its proper divisors (3652759039).

215065026401 is an equidigital number, since it uses as much as digits as its factorization.

215065026401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126543.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 215065026401 its reverse (104620560512), we get a palindrome (319685586913).

The spelling of 215065026401 in words is "two hundred fifteen billion, sixty-five million, twenty-six thousand, four hundred one".