6581451960 has 128 divisors (see below), whose sum is σ = 22531233600. Its totient is φ = 1707609600.

The previous prime is 6581451941. The next prime is 6581451973. The reversal of 6581451960 is 691541856.

6581451960 is a `hidden beast` number, since 6 + 581 + 4 + 5 + 1 + 9 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42391 + ... + 122310.

Almost surely, 2^6581451960 is an apocalyptic number.

6581451960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6581451960 is an abundant number, since it is smaller than the sum of its proper divisors (15949781640).

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

6581451960 is a wasteful number, since it uses less digits than its factorization.

6581451960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164758 (or 164748 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 6581451960 is about 81126.1484356308. The cubic root of 6581451960 is about 1874.0186352487.

The spelling of 6581451960 in words is "six billion, five hundred eighty-one million, four hundred fifty-one thousand, nine hundred sixty".