6501285581077 has 12 divisors (see below), whose sum is σ = 7562781611436. Its totient is φ = 5572485072000.

The previous prime is 6501285581071. The next prime is 6501285581113. The reversal of 6501285581077 is 7701855821056.

It can be written as a sum of positive squares in 2 ways, for example, as 3764011291236 + 2737274289841 = 1940106^2 + 1654471^2 .

It is not a de Polignac number, because 6501285581077 - 2²³ = 6501277192469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6501285581071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6442327 + ... + 7382827.

It is an arithmetic number, because the mean of its divisors is an integer number (630231800953).

Almost surely, 2^{6501285581077} is an apocalyptic number.

It is an amenable number.

6501285581077 is a deficient number, since it is larger than the sum of its proper divisors (1061496030359).

6501285581077 is a wasteful number, since it uses less digits than its factorization.

6501285581077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081588 (or 1081581 counting only the distinct ones).

The product of its (nonzero) digits is 4704000, while the sum is 55.

The spelling of 6501285581077 in words is "six trillion, five hundred one billion, two hundred eighty-five million, five hundred eighty-one thousand, seventy-seven".