7181138480 has 40 divisors (see below), whose sum is σ = 16924875072. Its totient is φ = 2833104384.

The previous prime is 7181138429. The next prime is 7181138501. The reversal of 7181138480 is 848311817.

It is a tau number, because it is divible by the number of its divisors (40).

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, 608984 + ... + 620663.

Almost surely, 2^7181138480 is an apocalyptic number.

It is an amenable number.

7181138480 is an abundant number, since it is smaller than the sum of its proper divisors (9743736592).

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

7181138480 is a wasteful number, since it uses less digits than its factorization.

7181138480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229733 (or 1229727 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 41.

The square root of 7181138480 is about 84741.5982856118. The cubic root of 7181138480 is about 1929.2911282528.

The spelling of 7181138480 in words is "seven billion, one hundred eighty-one million, one hundred thirty-eight thousand, four hundred eighty".