7157221596 has 72 divisors (see below), whose sum is σ = 21343422464. Its totient is φ = 1978953120.

The previous prime is 7157221573. The next prime is 7157221597. The reversal of 7157221596 is 6951227517.

7157221596 is a `hidden beast` number, since 7 + 1 + 57 + 2 + 2 + 1 + 596 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7157221597) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 450280 + ... + 465903.

Almost surely, 2^7157221596 is an apocalyptic number.

It is an amenable number.

7157221596 is an abundant number, since it is smaller than the sum of its proper divisors (14186200868).

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

7157221596 is a wasteful number, since it uses less digits than its factorization.

7157221596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916231 (or 916226 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 7157221596 is about 84600.3640417699. The cubic root of 7157221596 is about 1927.1469021680.

The spelling of 7157221596 in words is "seven billion, one hundred fifty-seven million, two hundred twenty-one thousand, five hundred ninety-six".