65220510005660 has 48 divisors (see below), whose sum is σ = 137010187450080. Its totient is φ = 26079230611200.

The previous prime is 65220510005611. The next prime is 65220510005701. The reversal of 65220510005660 is 6650001502256.

It is a happy number.

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, 1229366135 + ... + 1229419185.

It is an arithmetic number, because the mean of its divisors is an integer number (2854378905210).

Almost surely, 2^{65220510005660} is an apocalyptic number.

It is an amenable number.

65220510005660 is an abundant number, since it is smaller than the sum of its proper divisors (71789677444420).

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

65220510005660 is a wasteful number, since it uses less digits than its factorization.

65220510005660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73046 (or 73044 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 65220510005660 in words is "sixty-five trillion, two hundred twenty billion, five hundred ten million, five thousand, six hundred sixty".