215423455299 has 32 divisors (see below), whose sum is σ = 313363814400. Its totient is φ = 130839096960.

The previous prime is 215423455253. The next prime is 215423455307. The reversal of 215423455299 is 992554324512.

It is a happy number.

It is not a de Polignac number, because 215423455299 - 2⁹ = 215423454787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215423456299) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8802522 + ... + 8826960.

It is an arithmetic number, because the mean of its divisors is an integer number (9792619200).

Almost surely, 2^215423455299 is an apocalyptic number.

215423455299 is a deficient number, since it is larger than the sum of its proper divisors (97940359101).

215423455299 is a wasteful number, since it uses less digits than its factorization.

215423455299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27395.

The product of its digits is 3888000, while the sum is 51.

The spelling of 215423455299 in words is "two hundred fifteen billion, four hundred twenty-three million, four hundred fifty-five thousand, two hundred ninety-nine".