65506325231551 has 8 divisors (see below), whose sum is σ = 65851899070464. Its totient is φ = 65161616409720.

The previous prime is 65506325231527. The next prime is 65506325231561. The reversal of 65506325231551 is 15513252360556.

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

It is a cyclic number.

It is not a de Polignac number, because 65506325231551 - 2²³ = 65506316842943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65506325231495 and 65506325231504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65506325231561) 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, 216102415 + ... + 216405328.

It is an arithmetic number, because the mean of its divisors is an integer number (8231487383808).

Almost surely, 2^{65506325231551} is an apocalyptic number.

65506325231551 is a deficient number, since it is larger than the sum of its proper divisors (345573838913).

65506325231551 is a wasteful number, since it uses less digits than its factorization.

65506325231551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432508541.

The product of its (nonzero) digits is 4050000, while the sum is 49.

The spelling of 65506325231551 in words is "sixty-five trillion, five hundred six billion, three hundred twenty-five million, two hundred thirty-one thousand, five hundred fifty-one".