215366476241 has 12 divisors (see below), whose sum is σ = 250547390820. Its totient is φ = 184585806720.

The previous prime is 215366476223. The next prime is 215366476253. The reversal of 215366476241 is 142674663512.

It can be written as a sum of positive squares in 2 ways, for example, as 110905650625 + 104460825616 = 333025^2 + 323204^2 .

It is not a de Polignac number, because 215366476241 - 2¹⁴ = 215366459857 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215366478241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 512165 + ... + 832493.

It is an arithmetic number, because the mean of its divisors is an integer number (20878949235).

Almost surely, 2^215366476241 is an apocalyptic number.

It is an amenable number.

215366476241 is a deficient number, since it is larger than the sum of its proper divisors (35180914579).

215366476241 is a wasteful number, since it uses less digits than its factorization.

215366476241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334064 (or 334057 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 47.

The spelling of 215366476241 in words is "two hundred fifteen billion, three hundred sixty-six million, four hundred seventy-six thousand, two hundred forty-one".