7216388636 has 12 divisors (see below), whose sum is σ = 12704302128. Its totient is φ = 3586588032.

The previous prime is 7216388629. The next prime is 7216388659. The reversal of 7216388636 is 6368836127.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 5400821 + ... + 5402156.

It is an arithmetic number, because the mean of its divisors is an integer number (1058691844).

Almost surely, 2^7216388636 is an apocalyptic number.

It is an amenable number.

7216388636 is a deficient number, since it is larger than the sum of its proper divisors (5487913492).

7216388636 is a wasteful number, since it uses less digits than its factorization.

7216388636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10803148 (or 10803146 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 50.

The square root of 7216388636 is about 84949.3298148961. The cubic root of 7216388636 is about 1932.4427565973.

The spelling of 7216388636 in words is "seven billion, two hundred sixteen million, three hundred eighty-eight thousand, six hundred thirty-six".