64272563485 has 8 divisors (see below), whose sum is σ = 83059928280. Its totient is φ = 47462816064.

The previous prime is 64272563437. The next prime is 64272563503. The reversal of 64272563485 is 58436527246.

It can be written as a sum of positive squares in 4 ways, for example, as 9943480089 + 54329083396 = 99717^2 + 233086^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 64272563485 - 2²⁵ = 64239009053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494404270 + ... + 494404399.

It is an arithmetic number, because the mean of its divisors is an integer number (10382491035).

Almost surely, 2^64272563485 is an apocalyptic number.

64272563485 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64272563485 is a deficient number, since it is larger than the sum of its proper divisors (18787364795).

64272563485 is a wasteful number, since it uses less digits than its factorization.

64272563485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988808687.

The product of its digits is 9676800, while the sum is 52.

The spelling of 64272563485 in words is "sixty-four billion, two hundred seventy-two million, five hundred sixty-three thousand, four hundred eighty-five".