65056511515 has 8 divisors (see below), whose sum is σ = 80177754960. Its totient is φ = 50638581792.

The previous prime is 65056511491. The next prime is 65056511519. The reversal of 65056511515 is 51511565056.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65056511515 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65056511519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175828225 + ... + 175828594.

It is an arithmetic number, because the mean of its divisors is an integer number (10022219370).

Almost surely, 2^65056511515 is an apocalyptic number.

65056511515 is a deficient number, since it is larger than the sum of its proper divisors (15121243445).

65056511515 is a wasteful number, since it uses less digits than its factorization.

65056511515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351656861.

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 65056511515 in words is "sixty-five billion, fifty-six million, five hundred eleven thousand, five hundred fifteen".