65145177193 has 4 divisors (see below), whose sum is σ = 65296326528. Its totient is φ = 64994027860.

The previous prime is 65145177191. The next prime is 65145177217. The reversal of 65145177193 is 39177154156.

It is a happy number.

65145177193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 65145177193 - 2¹ = 65145177191 is a prime.

It is a super-2 number, since 2×65145177193² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65145177191) 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, 75574021 + ... + 75574882.

It is an arithmetic number, because the mean of its divisors is an integer number (16324081632).

Almost surely, 2^65145177193 is an apocalyptic number.

It is an amenable number.

65145177193 is a deficient number, since it is larger than the sum of its proper divisors (151149335).

65145177193 is a wasteful number, since it uses less digits than its factorization.

65145177193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151149334.

The product of its digits is 793800, while the sum is 49.

The spelling of 65145177193 in words is "sixty-five billion, one hundred forty-five million, one hundred seventy-seven thousand, one hundred ninety-three".