65145520053013 has 4 divisors (see below), whose sum is σ = 65211257208448. Its totient is φ = 65079782897580.

The previous prime is 65145520052989. The next prime is 65145520053121. The reversal of 65145520053013 is 31035002554156.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65145520053013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65145520053413) 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, 32868576231 + ... + 32868578212.

It is an arithmetic number, because the mean of its divisors is an integer number (16302814302112).

Almost surely, 2^{65145520053013} is an apocalyptic number.

It is an amenable number.

65145520053013 is a deficient number, since it is larger than the sum of its proper divisors (65737155435).

65145520053013 is an equidigital number, since it uses as much as digits as its factorization.

65145520053013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65737155434.

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 65145520053013 in words is "sixty-five trillion, one hundred forty-five billion, five hundred twenty million, fifty-three thousand, thirteen".