65213453155 has 4 divisors (see below), whose sum is σ = 78256143792. Its totient is φ = 52170762520.

The previous prime is 65213453153. The next prime is 65213453161. The reversal of 65213453155 is 55135431256.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 65213453155 - 2¹ = 65213453153 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65213453153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6521345311 + ... + 6521345320.

It is an arithmetic number, because the mean of its divisors is an integer number (19564035948).

Almost surely, 2^65213453155 is an apocalyptic number.

65213453155 is a deficient number, since it is larger than the sum of its proper divisors (13042690637).

65213453155 is a wasteful number, since it uses less digits than its factorization.

65213453155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13042690636.

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

The spelling of 65213453155 in words is "sixty-five billion, two hundred thirteen million, four hundred fifty-three thousand, one hundred fifty-five".