64556011441 has 4 divisors (see below), whose sum is σ = 64560290800. Its totient is φ = 64551732084.

The previous prime is 64556011439. The next prime is 64556011489. The reversal of 64556011441 is 14411065546.

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 64556011441 - 2¹ = 64556011439 is a prime.

It is a super-2 number, since 2×64556011441² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64556011441.

It is not an unprimeable number, because it can be changed into a prime (64556041441) 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, 2116971 + ... + 2147248.

It is an arithmetic number, because the mean of its divisors is an integer number (16140072700).

Almost surely, 2^64556011441 is an apocalyptic number.

It is an amenable number.

64556011441 is a deficient number, since it is larger than the sum of its proper divisors (4279359).

64556011441 is a wasteful number, since it uses less digits than its factorization.

64556011441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4279358.

The product of its (nonzero) digits is 57600, while the sum is 37.

Adding to 64556011441 its reverse (14411065546), we get a palindrome (78967076987).

The spelling of 64556011441 in words is "sixty-four billion, five hundred fifty-six million, eleven thousand, four hundred forty-one".