65501665510 has 16 divisors (see below), whose sum is σ = 117910306800. Its totient is φ = 26199042016.

The previous prime is 65501665507. The next prime is 65501665511. The reversal of 65501665510 is 1556610556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65501665511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26320 + ... + 362899.

It is an arithmetic number, because the mean of its divisors is an integer number (7369394175).

Almost surely, 2^65501665510 is an apocalyptic number.

65501665510 is a deficient number, since it is larger than the sum of its proper divisors (52408641290).

65501665510 is a wasteful number, since it uses less digits than its factorization.

65501665510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406055.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 65501665510 in words is "sixty-five billion, five hundred one million, six hundred sixty-five thousand, five hundred ten".