65651650605606 has 64 divisors (see below), whose sum is σ = 153647326586880. Its totient is φ = 18519990232320.

The previous prime is 65651650605479. The next prime is 65651650605613. The reversal of 65651650605606 is 60650605615656.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 714459855 + ... + 714551738.

It is an arithmetic number, because the mean of its divisors is an integer number (2400739477920).

Almost surely, 2^{65651650605606} is an apocalyptic number.

65651650605606 is an abundant number, since it is smaller than the sum of its proper divisors (87995675981274).

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

65651650605606 is a wasteful number, since it uses less digits than its factorization.

65651650605606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429011661.

The product of its (nonzero) digits is 29160000, while the sum is 57.

The spelling of 65651650605606 in words is "sixty-five trillion, six hundred fifty-one billion, six hundred fifty million, six hundred five thousand, six hundred six".