6481522572 has 48 divisors (see below), whose sum is σ = 17289350400. Its totient is φ = 1851296832.

The previous prime is 6481522559. The next prime is 6481522589. The reversal of 6481522572 is 2752251846.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319179 + ... + 338877.

It is an arithmetic number, because the mean of its divisors is an integer number (360194800).

Almost surely, 2^6481522572 is an apocalyptic number.

It is an amenable number.

6481522572 is an abundant number, since it is smaller than the sum of its proper divisors (10807827828).

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

6481522572 is a wasteful number, since it uses less digits than its factorization.

6481522572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23630 (or 23628 counting only the distinct ones).

The product of its digits is 268800, while the sum is 42.

The square root of 6481522572 is about 80507.9037859017. The cubic root of 6481522572 is about 1864.4855101995.

The spelling of 6481522572 in words is "six billion, four hundred eighty-one million, five hundred twenty-two thousand, five hundred seventy-two".