65220015506411 has 4 divisors (see below), whose sum is σ = 65547754278000. Its totient is φ = 64892276734824.

The previous prime is 65220015506407. The next prime is 65220015506413. The reversal of 65220015506411 is 11460551002256.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65220015506411 - 2² = 65220015506407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65220015506413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163869385496 + ... + 163869385893.

It is an arithmetic number, because the mean of its divisors is an integer number (16386938569500).

Almost surely, 2^{65220015506411} is an apocalyptic number.

65220015506411 is a deficient number, since it is larger than the sum of its proper divisors (327738771589).

65220015506411 is a wasteful number, since it uses less digits than its factorization.

65220015506411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327738771588.

The product of its (nonzero) digits is 72000, while the sum is 38.

Adding to 65220015506411 its reverse (11460551002256), we get a palindrome (76680566508667).

The spelling of 65220015506411 in words is "sixty-five trillion, two hundred twenty billion, fifteen million, five hundred six thousand, four hundred eleven".