65106566655 has 16 divisors (see below), whose sum is σ = 112183622880. Its totient is φ = 32052463488.

The previous prime is 65106566587. The next prime is 65106566671. The reversal of 65106566655 is 55666560156.

It is not a de Polignac number, because 65106566655 - 2¹² = 65106562559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65106566598 and 65106566607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166939720 + ... + 166940109.

It is an arithmetic number, because the mean of its divisors is an integer number (7011476430).

Almost surely, 2^65106566655 is an apocalyptic number.

65106566655 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

65106566655 is a deficient number, since it is larger than the sum of its proper divisors (47077056225).

65106566655 is a wasteful number, since it uses less digits than its factorization.

65106566655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333879850.

The product of its (nonzero) digits is 4860000, while the sum is 51.

The spelling of 65106566655 in words is "sixty-five billion, one hundred six million, five hundred sixty-six thousand, six hundred fifty-five".