65651560993632 has 96 divisors (see below), whose sum is σ = 176724022261248. Its totient is φ = 21328760065536.

The previous prime is 65651560993631. The next prime is 65651560993633. The reversal of 65651560993632 is 23639906515656.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (65651560993631) and next prime (65651560993633).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65651560993631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15263643 + ... + 19086170.

It is an arithmetic number, because the mean of its divisors is an integer number (1840875231888).

Almost surely, 2^{65651560993632} is an apocalyptic number.

It is an amenable number.

65651560993632 is an abundant number, since it is smaller than the sum of its proper divisors (111072461267616).

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

65651560993632 is a wasteful number, since it uses less digits than its factorization.

65651560993632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34350332 (or 34350324 counting only the distinct ones).

The product of its (nonzero) digits is 236196000, while the sum is 66.

The spelling of 65651560993632 in words is "sixty-five trillion, six hundred fifty-one billion, five hundred sixty million, nine hundred ninety-three thousand, six hundred thirty-two".