6477881528 has 32 divisors (see below), whose sum is σ = 12331128960. Its totient is φ = 3189684960.

The previous prime is 6477881513. The next prime is 6477881561. The reversal of 6477881528 is 8251887746.

It is a super-2 number, since 2×6477881528² = 83925898181607229568, which contains 22 as substring.

It is a congruent number.

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, 531875 + ... + 543917.

It is an arithmetic number, because the mean of its divisors is an integer number (385347780).

Almost surely, 2^6477881528 is an apocalyptic number.

It is an amenable number.

6477881528 is a deficient number, since it is larger than the sum of its proper divisors (5853247432).

6477881528 is a wasteful number, since it uses less digits than its factorization.

6477881528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13067 (or 13063 counting only the distinct ones).

The product of its digits is 6021120, while the sum is 56.

The square root of 6477881528 is about 80485.2876493586. The cubic root of 6477881528 is about 1864.1363152227.

The spelling of 6477881528 in words is "six billion, four hundred seventy-seven million, eight hundred eighty-one thousand, five hundred twenty-eight".