64272536551 has 4 divisors (see below), whose sum is σ = 64345491504. Its totient is φ = 64199581600.

The previous prime is 64272536521. The next prime is 64272536567. The reversal of 64272536551 is 15563527246.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 64272536551 - 2¹¹ = 64272534503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64272536521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36476155 + ... + 36477916.

It is an arithmetic number, because the mean of its divisors is an integer number (16086372876).

Almost surely, 2^64272536551 is an apocalyptic number.

64272536551 is a deficient number, since it is larger than the sum of its proper divisors (72954953).

64272536551 is an equidigital number, since it uses as much as digits as its factorization.

64272536551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72954952.

The product of its digits is 1512000, while the sum is 46.

The spelling of 64272536551 in words is "sixty-four billion, two hundred seventy-two million, five hundred thirty-six thousand, five hundred fifty-one".