64555771075 has 12 divisors (see below), whose sum is σ = 80052598528. Its totient is φ = 51642396000.

The previous prime is 64555771013. The next prime is 64555771087. The reversal of 64555771075 is 57017755546.

It is not a de Polignac number, because 64555771075 - 2⁹ = 64555770563 is a prime.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 789829 + ... + 867721.

Almost surely, 2^64555771075 is an apocalyptic number.

64555771075 is a deficient number, since it is larger than the sum of its proper divisors (15496827453).

64555771075 is a wasteful number, since it uses less digits than its factorization.

64555771075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111054 (or 111049 counting only the distinct ones).

The product of its (nonzero) digits is 5145000, while the sum is 52.

The spelling of 64555771075 in words is "sixty-four billion, five hundred fifty-five million, seven hundred seventy-one thousand, seventy-five".