64446522477 has 16 divisors (see below), whose sum is σ = 86078021952. Its totient is φ = 42889754880.

The previous prime is 64446522473. The next prime is 64446522499. The reversal of 64446522477 is 77422564446.

It is not a de Polignac number, because 64446522477 - 2² = 64446522473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64446522473) 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 15 ways as a sum of consecutive naturals, for example, 4318693 + ... + 4333589.

It is an arithmetic number, because the mean of its divisors is an integer number (5379876372).

Almost surely, 2^64446522477 is an apocalyptic number.

It is an amenable number.

64446522477 is a deficient number, since it is larger than the sum of its proper divisors (21631499475).

64446522477 is a wasteful number, since it uses less digits than its factorization.

64446522477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17308.

The product of its digits is 9031680, while the sum is 51.

The spelling of 64446522477 in words is "sixty-four billion, four hundred forty-six million, five hundred twenty-two thousand, four hundred seventy-seven".