64244265641 has 8 divisors (see below), whose sum is σ = 67640604480. Its totient is φ = 60849433008.

The previous prime is 64244265619. The next prime is 64244265727. The reversal of 64244265641 is 14656244246.

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 64244265641 - 2¹⁸ = 64244003497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64244265592 and 64244265601.

It is not an unprimeable number, because it can be changed into a prime (64244465641) 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 7 ways as a sum of consecutive naturals, for example, 288461 + ... + 460106.

It is an arithmetic number, because the mean of its divisors is an integer number (8455075560).

Almost surely, 2^64244265641 is an apocalyptic number.

It is an amenable number.

64244265641 is a deficient number, since it is larger than the sum of its proper divisors (3396338839).

64244265641 is a wasteful number, since it uses less digits than its factorization.

64244265641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753103.

The product of its digits is 1105920, while the sum is 44.

It can be divided in two parts, 64 and 244265641, that multiplied together give a square (15633001024 = 125032²).

The spelling of 64244265641 in words is "sixty-four billion, two hundred forty-four million, two hundred sixty-five thousand, six hundred forty-one".