215443365515466 has 96 divisors (see below), whose sum is σ = 503482739457600. Its totient is φ = 61237395648000.

The previous prime is 215443365515459. The next prime is 215443365515467. The reversal of 215443365515466 is 664515563344512.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (215443365515467) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75926751 + ... + 78713138.

It is an arithmetic number, because the mean of its divisors is an integer number (5244611869350).

Almost surely, 2^{215443365515466} is an apocalyptic number.

215443365515466 is an abundant number, since it is smaller than the sum of its proper divisors (288039373942134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215443365515466 is a wasteful number, since it uses less digits than its factorization.

215443365515466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154640036 (or 154640025 counting only the distinct ones).

The product of its digits is 155520000, while the sum is 60.

The spelling of 215443365515466 in words is "two hundred fifteen trillion, four hundred forty-three billion, three hundred sixty-five million, five hundred fifteen thousand, four hundred sixty-six".