64444436375701 has 4 divisors (see below), whose sum is σ = 65536714958400. Its totient is φ = 63352157793004.

The previous prime is 64444436375689. The next prime is 64444436375723. The reversal of 64444436375701 is 10757363444446.

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 64444436375701 - 2¹⁹ = 64444435851413 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 (64444836375701) 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, 546139291261 + ... + 546139291378.

It is an arithmetic number, because the mean of its divisors is an integer number (16384178739600).

Almost surely, 2^{64444436375701} is an apocalyptic number.

It is an amenable number.

64444436375701 is a deficient number, since it is larger than the sum of its proper divisors (1092278582699).

64444436375701 is a wasteful number, since it uses less digits than its factorization.

64444436375701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092278582698.

The product of its (nonzero) digits is 81285120, while the sum is 58.

The spelling of 64444436375701 in words is "sixty-four trillion, four hundred forty-four billion, four hundred thirty-six million, three hundred seventy-five thousand, seven hundred one".