6509657131460 has 60 divisors (see below), whose sum is σ = 15947711160108. Its totient is φ = 2231882428608.

The previous prime is 6509657131451. The next prime is 6509657131463. The reversal of 6509657131460 is 641317569056.

It can be written as a sum of positive squares in 2 ways, for example, as 2945596443076 + 3564060688384 = 1716274^2 + 1887872^2 .

It is not an unprimeable number, because it can be changed into a prime (6509657131463) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 67732667 + ... + 67828706.

Almost surely, 2^{6509657131460} is an apocalyptic number.

It is an amenable number.

6509657131460 is an abundant number, since it is smaller than the sum of its proper divisors (9438054028648).

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

6509657131460 is a wasteful number, since it uses less digits than its factorization.

6509657131460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135561410 (or 135561387 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 53.

The spelling of 6509657131460 in words is "six trillion, five hundred nine billion, six hundred fifty-seven million, one hundred thirty-one thousand, four hundred sixty".