7181621104 has 60 divisors (see below), whose sum is σ = 16304518944. Its totient is φ = 3055325952.

The previous prime is 7181621101. The next prime is 7181621113. The reversal of 7181621104 is 4011261817.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7181621101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73977 + ... + 140839.

Almost surely, 2^7181621104 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 7181621104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8152259472).

7181621104 is an abundant number, since it is smaller than the sum of its proper divisors (9122897840).

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

7181621104 is a wasteful number, since it uses less digits than its factorization.

7181621104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67022 (or 67009 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 7181621104 is about 84744.4458593010. The cubic root of 7181621104 is about 1929.3343480173.

The spelling of 7181621104 in words is "seven billion, one hundred eighty-one million, six hundred twenty-one thousand, one hundred four".