7321175680 has 128 divisors (see below), whose sum is σ = 21541322880. Its totient is φ = 2317012992.

The previous prime is 7321175671. The next prime is 7321175737. The reversal of 7321175680 is 865711237.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×7321175680² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4614 + ... + 121093.

It is an arithmetic number, because the mean of its divisors is an integer number (168291585).

Almost surely, 2^7321175680 is an apocalyptic number.

7321175680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7321175680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10770661440).

7321175680 is an abundant number, since it is smaller than the sum of its proper divisors (14220147200).

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

7321175680 is a wasteful number, since it uses less digits than its factorization.

7321175680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125746 (or 125734 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 7321175680 is about 85563.8690102312. The cubic root of 7321175680 is about 1941.7513217791.

The spelling of 7321175680 in words is "seven billion, three hundred twenty-one million, one hundred seventy-five thousand, six hundred eighty".