7121576640 has 56 divisors (see below), whose sum is σ = 22611008880. Its totient is φ = 1899086848.

The previous prime is 7121576617. The next prime is 7121576653. The reversal of 7121576640 is 466751217.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3708195 + ... + 3710114.

Almost surely, 2^7121576640 is an apocalyptic number.

It is an amenable number.

7121576640 is an abundant number, since it is smaller than the sum of its proper divisors (15489432240).

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

7121576640 is a wasteful number, since it uses less digits than its factorization.

7121576640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7418329 (or 7418319 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 7121576640 is about 84389.4344097648. The cubic root of 7121576640 is about 1923.9423336984.

The spelling of 7121576640 in words is "seven billion, one hundred twenty-one million, five hundred seventy-six thousand, six hundred forty".