64519055471 has 6 divisors (see below), whose sum is σ = 69863829480. Its totient is φ = 59556051048.

The previous prime is 64519055453. The next prime is 64519055501. The reversal of 64519055471 is 17455091546.

64519055471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64519055471 - 2¹⁴ = 64519039087 is a prime.

It is a super-3 number, since 3×64519055471³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64519055771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 190884611 + ... + 190884948.

It is an arithmetic number, because the mean of its divisors is an integer number (11643971580).

Almost surely, 2^64519055471 is an apocalyptic number.

64519055471 is a deficient number, since it is larger than the sum of its proper divisors (5344774009).

64519055471 is a wasteful number, since it uses less digits than its factorization.

64519055471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381769585 (or 381769572 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 64519055471 in words is "sixty-four billion, five hundred nineteen million, fifty-five thousand, four hundred seventy-one".