216770797370 has 8 divisors (see below), whose sum is σ = 390187435284. Its totient is φ = 86708318944.

The previous prime is 216770797361. The next prime is 216770797391. The reversal of 216770797370 is 73797077612.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 216134799409 + 635997961 = 464903^2 + 25219^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10838539859 + ... + 10838539878.

Almost surely, 2^216770797370 is an apocalyptic number.

216770797370 is a deficient number, since it is larger than the sum of its proper divisors (173416637914).

216770797370 is a wasteful number, since it uses less digits than its factorization.

216770797370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21677079744.

The product of its (nonzero) digits is 5445468, while the sum is 56.

The spelling of 216770797370 in words is "two hundred sixteen billion, seven hundred seventy million, seven hundred ninety-seven thousand, three hundred seventy".