215445887082 has 24 divisors (see below), whose sum is σ = 466814651940. Its totient is φ = 71812952640.

The previous prime is 215445887077. The next prime is 215445887087. The reversal of 215445887082 is 280788544512.

215445887082 is a `hidden beast` number, since 2 + 1 + 54 + 4 + 588 + 7 + 0 + 8 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (215445887077) and next prime (215445887087).

It can be written as a sum of positive squares in 2 ways, for example, as 215425011321 + 20875761 = 464139^2 + 4569^2 .

It is not an unprimeable number, because it can be changed into a prime (215445887087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 425032 + ... + 782012.

Almost surely, 2^215445887082 is an apocalyptic number.

215445887082 is an abundant number, since it is smaller than the sum of its proper divisors (251368764858).

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

215445887082 is a wasteful number, since it uses less digits than its factorization.

215445887082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390518 (or 390515 counting only the distinct ones).

The product of its (nonzero) digits is 5734400, while the sum is 54.

The spelling of 215445887082 in words is "two hundred fifteen billion, four hundred forty-five million, eight hundred eighty-seven thousand, eighty-two".