215720733002 has 4 divisors (see below), whose sum is σ = 323581099506. Its totient is φ = 107860366500.

The previous prime is 215720732989. The next prime is 215720733037. The reversal of 215720733002 is 200337027512.

215720733002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 149250096241 + 66470636761 = 386329^2 + 257819^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 215720733002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53930183249 + ... + 53930183252.

Almost surely, 2^215720733002 is an apocalyptic number.

215720733002 is a deficient number, since it is larger than the sum of its proper divisors (107860366504).

215720733002 is a wasteful number, since it uses less digits than its factorization.

215720733002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107860366503.

The product of its (nonzero) digits is 17640, while the sum is 32.

The spelling of 215720733002 in words is "two hundred fifteen billion, seven hundred twenty million, seven hundred thirty-three thousand, two".