65651561010015 has 64 divisors (see below), whose sum is σ = 107666771097600. Its totient is φ = 34142175010944.

The previous prime is 65651561009987. The next prime is 65651561010019. The reversal of 65651561010015 is 51001016515656.

It is not a de Polignac number, because 65651561010015 - 2¹⁴ = 65651560993631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65651561010019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3768953976 + ... + 3768971394.

It is an arithmetic number, because the mean of its divisors is an integer number (1682293298400).

Almost surely, 2^{65651561010015} is an apocalyptic number.

65651561010015 is a deficient number, since it is larger than the sum of its proper divisors (42015210087585).

65651561010015 is a wasteful number, since it uses less digits than its factorization.

65651561010015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26996.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 65651561010015 in words is "sixty-five trillion, six hundred fifty-one billion, five hundred sixty-one million, ten thousand, fifteen".