7215996656 has 60 divisors (see below), whose sum is σ = 15428397936. Its totient is φ = 3267010560.

The previous prime is 7215996653. The next prime is 7215996673. The reversal of 7215996656 is 6566995127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7215996653) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 490301 + ... + 504803.

Almost surely, 2^7215996656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7215996656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7714198968).

7215996656 is an abundant number, since it is smaller than the sum of its proper divisors (8212401280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7215996656 is a wasteful number, since it uses less digits than its factorization.

7215996656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14790 (or 14773 counting only the distinct ones).

The product of its digits is 6123600, while the sum is 56.

The square root of 7215996656 is about 84947.0226435277. The cubic root of 7215996656 is about 1932.4077671372.

The spelling of 7215996656 in words is "seven billion, two hundred fifteen million, nine hundred ninety-six thousand, six hundred fifty-six".