65148217791 has 8 divisors (see below), whose sum is σ = 89211974064. Its totient is φ = 42258303360.

The previous prime is 65148217787. The next prime is 65148217829. The reversal of 65148217791 is 19771284156.

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

It is not a de Polignac number, because 65148217791 - 2² = 65148217787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65148217721) 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, 293460330 + ... + 293460551.

It is an arithmetic number, because the mean of its divisors is an integer number (11151496758).

Almost surely, 2^65148217791 is an apocalyptic number.

65148217791 is a deficient number, since it is larger than the sum of its proper divisors (24063756273).

65148217791 is a wasteful number, since it uses less digits than its factorization.

65148217791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586920921.

The product of its digits is 846720, while the sum is 51.

The spelling of 65148217791 in words is "sixty-five billion, one hundred forty-eight million, two hundred seventeen thousand, seven hundred ninety-one".