6537400800065 has 16 divisors (see below), whose sum is σ = 7893484881408. Its totient is φ = 5197597938816.

The previous prime is 6537400800017. The next prime is 6537400800101. The reversal of 6537400800065 is 5600080047356.

It is a cyclic number.

It is not a de Polignac number, because 6537400800065 - 2¹² = 6537400795969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6537400799989 and 6537400800025.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4339652 + ... + 5648661.

It is an arithmetic number, because the mean of its divisors is an integer number (493342805088).

Almost surely, 2^{6537400800065} is an apocalyptic number.

It is an amenable number.

6537400800065 is a deficient number, since it is larger than the sum of its proper divisors (1356084081343).

6537400800065 is a wasteful number, since it uses less digits than its factorization.

6537400800065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9989128.

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 6537400800065 in words is "six trillion, five hundred thirty-seven billion, four hundred million, eight hundred thousand, sixty-five".