215002421450 has 96 divisors (see below), whose sum is σ = 411537874176. Its totient is φ = 83544168960.

The previous prime is 215002421419. The next prime is 215002421477. The reversal of 215002421450 is 54124200512.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74060699 + ... + 74063601.

It is an arithmetic number, because the mean of its divisors is an integer number (4286852856).

Almost surely, 2^215002421450 is an apocalyptic number.

215002421450 is a deficient number, since it is larger than the sum of its proper divisors (196535452726).

215002421450 is a wasteful number, since it uses less digits than its factorization.

215002421450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288 (or 3283 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 215002421450 its reverse (54124200512), we get a palindrome (269126621962).

The spelling of 215002421450 in words is "two hundred fifteen billion, two million, four hundred twenty-one thousand, four hundred fifty".