7216161407 has 16 divisors (see below), whose sum is σ = 8946272832. Its totient is φ = 5667805440.

The previous prime is 7216161389. The next prime is 7216161409. The reversal of 7216161407 is 7041616127.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 7216161407 - 2¹⁰ = 7216160383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7216161409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276944 + ... + 301877.

It is an arithmetic number, because the mean of its divisors is an integer number (559142052).

Almost surely, 2^7216161407 is an apocalyptic number.

7216161407 is a deficient number, since it is larger than the sum of its proper divisors (1730111425).

7216161407 is a wasteful number, since it uses less digits than its factorization.

7216161407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578978.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 7216161407 is about 84947.9923659176. The cubic root of 7216161407 is about 1932.4224735228.

The spelling of 7216161407 in words is "seven billion, two hundred sixteen million, one hundred sixty-one thousand, four hundred seven".