65496149521 has 4 divisors (see below), whose sum is σ = 71450344944. Its totient is φ = 59541954100.

The previous prime is 65496149519. The next prime is 65496149531. The reversal of 65496149521 is 12594169456.

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 65496149521 - 2¹ = 65496149519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65496149531) 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, 2977097695 + ... + 2977097716.

It is an arithmetic number, because the mean of its divisors is an integer number (17862586236).

Almost surely, 2^65496149521 is an apocalyptic number.

It is an amenable number.

65496149521 is a deficient number, since it is larger than the sum of its proper divisors (5954195423).

65496149521 is a wasteful number, since it uses less digits than its factorization.

65496149521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5954195422.

The product of its digits is 2332800, while the sum is 52.

The spelling of 65496149521 in words is "sixty-five billion, four hundred ninety-six million, one hundred forty-nine thousand, five hundred twenty-one".